Carrera all the way
I'd buy a 95-98 Carrera 2 (RWD). Then I would do further mods. I would never stick a supercharger or a turbo in it, however, cuz it would raise the need for more frequent engine rebuilds and i'd have no money left for those kinds of repairs. I would put on a TECHART body kit including wing and lowering. Then I would make sure it is black with black tinted windows. I would strip it of AC and radios and cd players and speakers. I would add carbon fibre hood, and door panels. Roll cage, too. Now I would be broke, but I would have a pimp car.
I think I gonna go NFS Porsche Unleashed now.