GT2:
Venturi´s
Vector´s
BMW 3 compact
BMW 7
Shelby Daytona Coupe
Nissan Fairlady 300ZX Race Car (don´t know the correct name)
Both Drag Racers (Skyline and 180SX)
Suzuki Cultus Pikes Peak
.....
Could go for longer but this are "mine".
PS: Eventually the Polyphony 001/002 from GT3, because these are oldschool F1 cars.
Also, I miss the Cultus Pikes Peak from GT2 and the GTO LM from GT1. The only car I miss from GT4 is the FPV F6 Typhoon because I thought it was quite fun to drive.