McLaren F1 GTR 1997
Cool car with a ton of cool potential liveries to be made.
Nissan R390 GT1:
Seeing as PD are bringing back nostalgic cars from early GT games, this one should return as it was one of GTs staple cars back in the PS2 gen + I would hate for the CLK-LM to be the only GT1 car of that era. *Yes I know the 1996 F1 GTR is included but it wasn't too competitive against the 1997/1998 GT1 cars.
1997 Panoz Esperante GTR-1
Same reason as the R390 + it sounds super sick IRL.
2000 Dodge Viper GTS-R
GT Staple like the R390+ the livery options are endless for this car.
2000 Corvette C5-R
Same reason as the GTS-R + it's a direct competitor to the GTS-R.
Toyota GT-ONE
It's a GT-ONE.