That Silk Cut Jag would sure be great. I still remember when it won Le Mans with the dane John Nielsen as one of the drivers. The first dane ever to win at Le Mans.

Speaking of Lemans cars, I would love to see the Porsche 917 KH (Kurz Heck(Short Tale))

I'd would like to see my old banged up Audi 100 2,0 turbo diesel 1987 (with all the dents, the crappy paint, and black smoke from the tailpipe when i unleash all of the 87hp).

I would actually like to see a diesel (don't hate me). BMW actually makes some very good diesel engines with a lot of power, and they are still drivers cars. And let's not forget that Audi won Le Mans with a diesel.

Toyota MR2 would also be great, not the ugly square one, but the one from the early 90's. They are great fun to drive

Thats a nice track, a lot of tight turns, but whats up about the dirt part of the track.
But in total a good layout.