Yeah, that would be lovely. I narrow it down to car choices. There aren't enough same "class" of car, if you will. The closest we have, are the Gr.3 Road cars.
There aren't say, the 2017 Shelby GT350, Camaro ZL1, etc. There's nothing to properly match the 997. Maybe a Scuderia Ferrari(which isn't in the game). Trying to match the 997(pretty much a race car) by using a Mustang GT, is just not going to happen.