These could be transformed into the MOST fun cars to drive! I had a '71, lowered Mulholland suspension, some SSS stuff, roll bar, 50 series Pirellis . . . handled like a slot car. The engine mods made it unpleasant to drive around town, but when you put your foot down it was nice! Unfortunately I hit a deer driving to work through Malibu Canyon one morning (in the dark), and totalled it. Actually, the 510 is already a classic, and getting harder and harder to find.