Shelby Cobra was so awesome that it became official content, but started as a third party mod.
There are plenty of vintage V8 american muscle cars and so on to be found, they are mostly not on this site though, which in AC means something, unfortunately. There are some facebook pages that link LOTS of material with questionable origin. The models are stolen, sounds are stolen and physics sucks really bad. But there is those mods if you really want them.
I cant bare the bad physics myself though.
Personally I love the
Ford Falcon fg v8sc Conrod Edition
and
Holden Commodore ve v8sc ConrodEdition
Is it what you wanted?
Just google their names + assetto corsa.
They're the only ones which seem to have good physics, sound, etc.
Not sure if they're stolen or not, cos I've seen them being updated over the months with better models, etc.
It works well on my side and I have version 1.4.3.Those mods crash the game for me.
I'm sending you a private message with some links.
Didn't MakCorp said they were bringing V8 supercar to rf2 and AC?
I'm impressed with their mod for rF2, better than I expected!Fvrfactor are working on releasing their 2014 mod for AC. The rFactor 1 and 2 verison has just been released. Some videos over in their site from the AC version