Here are a couple that I've finished. I chose the Harry Gant car because that is the car I remember most from the first NASCAR race I watched. Now I can't remember if it was one that he won at Talledega in 84, or if it was Pocono. Either way, here it is, slightly adapted to match the car's body style. Decals are the peel and stick variety from Patto.
Unfortunately we have a lack of Indycars, so I did the next best thing, I turned a cheap F1 into Rossi's Indy 500 winner. Of course I took liberty with some of the decal placements due to the body being different. I think it turned out looking sharp. Decals are from Indycals.