S2k stuff...
http://www.aj-racing.com/
My best friend had a Comptech Supercharged S2000, lots of suspension stuff, hardtop, Work wheels, J's Racing carbon fiber front bumper and stuff, sticky tires and upgraded brake set up and it was EASILY the most fun car I've ever driven. It started right up, wasn't loud unless you were on it, easy to drive, low maintenance, handled like it was on rails and it looked awesome.
Looking back I regret not buying it from him.
I've driven a stock S2000 and it's was pretty fun even in stock trim. Definitely be patient when looking for one. You can find some really, really nice modded S2000s out there for not a lot of money.