Since this is a general thread, I have a couple Countach's available. I can tune both of them up for free if you want. Both of these cars combined are worth 300,000 (before upgrades), so I'd settle for any car within 100k of that. I can't think of any cars specifically, I'm not too picky.
EDIT: doesn't seem people are very interested in this thread. Anyway, I sold these cars, but I now have a Ford stock car and a McLaren F1 available. Name your price!