Agreed - the cars are full modified within the relatively strict fray rules. They are really works of art. I ended up selling most all of my HO collection to simply run a few race-prepped Fray cars. The competition is that fierce. However, to keep things sane, my local group races with stuff like this too:

Box stock AW cars...maybe a tire change if one is a real dog or out of round but that's it. Crash and burn is a lot of fun on a fray track with these.
Cheers,
Mike