[via EVO]

Well, this explains the flecks of mud from our gallery earlier today.

We'd been fantasizing about the symphony of a 450 HP 3.8-liter flat-six all morning, and now that we've sampled it and seen the car on the track, the $132,800 asking price doesn't seem all that unreasonable.

You've already seen the impressive stats on the 911 GT3 RS. Now feast your eyes on it live on the Frankfurt Motor Show floor.

PORSCHE READIES MOST DYNAMIC 911 TO DATE: 2010 911 GT3 RS Porsche rolls out the definitive track ready, street legal 911

Delivering even more engine power, lower weight and shorter transmission ratios, as well as upgraded body and suspension components than all previous GT3s, the new Porsche 911 GT3 RS sets the foundation for homologating the race version of the 911 GT3 and will be introduced at the Frankfurt Motor Show September 17-27, 2009.

The heart of the new, uncompromising GT3 RS is the power unit. Like the engine featured in the 911 GT3, the naturally-aspirated RS power unit now displaces 3.8 liters and delivers even more power, while revving up even faster to its 8500 rpm redline. It now delivers 450 horsepower, 15 more horsepower than its 911 GT3 counterpart. Even with a specific output of more than 118 hp per liter from the six-cylinder boxer engine, the power unit in the new GT3 RS remains fully suitable for everyday use.

The new 911 GT3 RS comes exclusively with a six-speed manual gearbox optimized for short gearshift travel, low weight and high efficiency. To enhance the level of performance throughout the entire range of engine and road speed, the transmission comes with shorter ratios than found in the 911 GT3, deliberately conceding an even higher potential top track speed.

Dynamic engine mounts are standard and serve to improve the car's handling to an even higher level. Depending on driving conditions, the mounts change in their stiffness and damping effect, improving the connection between the engine and the body when driving under very lively conditions, yet allow for more comfortable conditions during everyday street use.

Porsche is also introducing another new option in 2010 for the GT3 RS, a lithium-ion battery. Delivered with the car and, when replacing the conventional lead-acid battery, it reduces the weight by more than 10 kg or 22 lb and is mainly intended for the track.

To further improve its sporting behavior, the new 911 GT3 RS comes with a purpose-built and specially set up PASM suspension, a wider front and rear track and corresponding bodywork.

The front axle comes with nine-inch-wide wheels running on 245/35 ZR 19 sports tires while the rear axle features twelve-inch-wide wheels incorporating 325/30 ZR 19 sports tires.

The new 911 GT3 RS shows its close connection to motorsport through its dynamic looks, in particular by its low ride height, the new, extra large carbon-fiber rear wing and titanium exhaust system.

The 2010 911 GT3 RS goes on sale in the U.S. in early spring of 2010 and will be priced at $132,800.

Having recently revealed an updated 2009 Porsche 911 Carrera, Cabriolet and 2009 Porsche 911 Targa 46, Porsche has laid the framework for the model we're really interested in, the GT3 RS.

In these recently taken photos of the new Porsche 911 GT3 RS, you can see that it receives a mildly revised front fascia with larger side intakes and the blinker/LED DLOs from the new Carrera model. It also appears that the lower lip spoiler has been re-sculpted to allow for better airflow around the front end. The rear of the car carries on with the same spoiler as the previous version and the taillights are the same LED units as the rest of the revised 911 line-up. The big change to the rear is an all-new rear fascia with a single large vent on each corner as opposed to the dual split vent setup on the previous model. The lower trailing edge of each vent sweeps towards the center, up and over the exhaust. Expect the RS to carry on with its unique theme of decorative stripes; exterior colors; contrasting painted mirrors, wheels, rear spoiler endplates and rollcage.

Moving on to the wheels, if you look closely, you’ll see the coolest change that Porsche has made to the new model. The new GT3 RS will, as standard, feature Porsche’s center-lock hub that was debuted a few months ago as an option on the 911 Turbo model.

The powertrain will come from the current cars 3.6-liter flat six but will most likely gain direct fuel injection or a tweaked version of the new 3.8-liter flat-six from the revised Carrera – which could produce around 440bhp, allowing it to best the current cars 0-60 time of close to 4 seconds and 193mph top speed. Either engine will likely be offered with Porsche’s new DSG-style PDK transmission.

You’ll be able to taste the rainbow next year when the revised 911 GT3 RS reaches dealers in all your favorite skittles colors.

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