It's funny that the car known as the "Poor Man's BMW 2002" is now worth more than a 2002. In 1971, you could buy a brand-new 2002 for $3,275… or a Datsun 510 for $1,990. Both cars had IRS, disc brakes, etc., but the BMW had the power edge, with 114 horses versus 96. With the money the Datsun buyer saved, however, another 50 horsepower could be added, with enough left over to buy better wheels. Many did, and that's why almost all of the 510s have been hooned to death by now.
The original carbureted L16 is long gone, replaced by what appears to be a fuel-injected L20. I neglected to ask the owner what junkyard donor provided this powerplant, so you Nissan aficionados will have to help ID it for us.
I'm glad we finally have a 510 for Down On The Street, not least because Alameda is in the 510 area code. We've had a 411 and a 610, but the once-common 510 is a rarity these days.