We must say, this was a particularly sinister edition of BOTD. If you got this one, you're either an automotive encyclopedia or an eccentric Euro-car mechanic. It's the micro-sized, Bertone-styled, 993 cc Daihatsu turbo-powered Nuova Innocenti hailing from Milan's De Tomaso Group.

This particular model was spotted last weekend acting as a spiffy pit car at the Nelson's Ledges 24 Hours of LeMons race. It was originally imported to Canada and sold as the sporting model with Abarth wheels, that racy turbocharged and intercooled Daihatsu mill, and it even has power windows. If you want a real trip, check out the design on the master cylinder. Quite a unique machine if you ask us, and rare to boot. So rare in fact the owner is selling it for, get this, $11,000. If you want to be the most eccentric Japanese-Italian hot-hatch owner on your block, the privilege doesn't come cheap.

This one was particularly challenging as that Viper V10 was quite obviously not originally intended for the rusty and upright engine bay it currently rests in. The perceptive among you would have noted the shape of the firewall, location of the wiper motor, the fresh air intake and the dual hinge links and maybe, just maybe, if you've got the skill you'd have put it together and guessed correctly, a 1956 Ford F-100 pickup — the sleepiest sleeper we've seen since the Oklahoma Farm Truck.

[The Real JDM, (ironically)]

M Power usually comes in a greater number of cylinders: six in an E46 M3, eight in the current M3, ten in an M5 and twelve in the McLaren F1. But this little four-pot—and you guessed S14B23 if you guessed right—is what powered the original E30 M3, that Lego block of automotive perfection able to give grown men the wobblies in the knees and the sighs on eBay.

The S14B23 has got quite a pedigree. The engine block is the M10, which has scaled in horsepower from 75 in the 1962 BMW 1500 sedan all the way to around 1500 in Gordon Murray’s sublime Brabham BT52, which gave Nelson Piquet the Formula One world title in 1983. The cylinder head is straight off the M88 engine from the M1 supercar, minus two cylinders.

In the E30 M3, the engine is 2.3 liters (93.4 mm bore × 84 mm stroke), naturally aspirated like every proper M and develops in the close neighborhood of 200 HP. Not bad at all for an unblown street engine in 1986.

But transcending all the numbers is the sheer ferocity of noise as the S14B23 approaches its readline of 7200 RPM. If you care—and are surrounded by noises less pleasant—you might as well hit play and listen to the sixteen valves of the very engine pictured here do their magic around a racetrack.

A storm rolled into the bay today, so if you guessed either the GMC Syclone or Typhoon sport trucks you'd be correct. The S-10/Blazer's 4.3-liter V6 was modified with a Mitsubishi-sourced TD06-17C/8cm2 snail and a Garrett water/air intercooler, forged pistons, high-flow exhaust manifolds and a 48mm twin-bore throttle body from the 5.7-liter V8 with which the 4.3-liter shares its architecture. All the go-fast goodies gave a (at the time) competitive 280 HP and 360 lb-ft of torque, good for 5.3 seconds to 60mph and 14.1 seconds at 95 mph through the quarter mile.

Image: Flickr

It's a bay that lives in bays! This meager mill belongs to none other than the iconic and well-loved, if not commercially successful Amphicar. Produced from 1961 through 1965, though sold and titled through 1968, the Amphicar used a 43 HP, 1.1 liter Triumph four-cylinder engine. The mill was in charge of both on-road and in-water motivation and power was swapped between the transmission and twin prop shafts via a transfer case of sorts. At sea, it manages a near-wake speed of 7 knots and on land it'll rocket to 60 MPH in only 43 seconds, with a top speed of 70 MPH. A grand total of only 3,878 were ever produced with about a quarter surviving today.

Photo source: DrummerDonnies

Stumped? Hidden beneath the twin intercoolers is a Callaway-tuned 2.5-liter V6 twin turbo from the Alfa Romeo GTV6. It pumped out 230 horsepower allowing it to sprint to 60 mph in 5.9 seconds and a hurtle down the 1320 in 14.3 seconds at 98 mph. Pretty impressive for 1985.

Image Credit: Flickr

Give up? That right there is the meager motivator from the Saab 92. It's a 2-cycle, two cylinder front-engine unit with between 25 and 28 raging horsepower and driving a three speed transmission. We figured it'd be appropriate to feature one of Saab's wackiest engines on a day when we saw a sneak-peak of the 2010 Saab 9-5 and received news Swedish supercar builder Koenigsegg intends to buy the brand.

Photo source: 452-Engines

If you guessed a 1944 Ford GPW Military Jeep — good for you. Now have a Happy Memorial Day! Remember to come back throughout the weekend for LeMons and Indy 500 coverage, and then we'll see you sporadically on Monday and back again full-time for your enjoyment come Tuesday.

Photo Credit: willys-mb.co.uk

If you guessed the Mk1 1983 Volkswagen Golf GTI - good for you. Now take a gander at the official specs below.

Specs:

1983 VW GTI
Engine: Fuel-injected, 1.8 liter four cylinder
Power: 90HP
Transmission: 5-speed manual
Base price: $8000
0-60 MPH: 9.7 seconds

Though the GTI was more renowned for it's handling and straightforward simplicity, it debuted with the free running 1.8-liter four cranking out 90 HP when the 2.3 liter Mustang actually made two fewer ponies and weighed a whole lot more. This particular example was found on VW Vortex where the owner was selling this very well maintained example for an ambitious but probably fair $10,000. It's pretty hard to find Mk1 GTI's in conditions rivaling factory perfect. [VW Vortex]

If you guessed the 2010 Hennessey HPE550 Camaro — good for you. Now take a gander at the official specs below.

2010 HPE550 Camaro

Specifications, Options & Pricing

Power:
* 562 bhp @ 6,200 rpm
* 557 lb-ft Torque @ 4,200 rpm 



Performance (estimated):
* 0 - 60 mph: 3.9 sec.
* 1/4 mile: 11.9 @ 119 mph

2010 HPE550 Camaro Package (available for 6sp & auto) Includes:

* Magnuson / Hennessey Supercharger System
* Corsa Stainless Steel Exhaust System
* Hennessey Air Induction System
* Hennessey High Flow Fuel Injectors
* Hennessey Engine Management Calibration
* Hennessey Aluminum Wheel Upgrade (uses factory tires)
* Hennessey Cam-Aero™ Urethane Body Components: Rear Lip Spoiler, Front Splitter & Side Rocker Panels
* Hennessey Exterior Graphics Package (rear quarter panels)
* Hennessey Premium Floor Mats
* Hennessey & HPE550 Exterior Badges
* Serial Numbered Plaque in Interior & Engine Compartment
* Parts Cost: $18,950 US Dollars plus Shipping
* Installed Cost: $24,950 plus Vehicle Shipping

Options:
* Hennessey Front Brake Upgrade $4,500
4-Piston Calipers with 14 inch Rotors
* Hennessey Coilover Suspension Upgrade $3,500
* 15 inch Brakes with Carbon Rotors $19,500
* 5-Speed High-Performance Automatic Transmission $6,500
* Torque Converter Upgrade $2,500
* Differential Cooler $3,500
* Connolly Leather Interior with Custom Colors $8,500
* 705 hp LS9 Engine Upgrade $39,500
* 850 hp Twin Turbo Upgrade $54,500
* 1000 hp Twin Turbo Upgrade $59,500