if you are interested in building racecars check out this link: http://imrdirtcars.com.snare.arvixe.com/ this work is amazing!
Great stuff!
There is a guy in another of my model race car discussion groups that scratch builds HO scale (1:87) sprint cars. I see awesome stuff in those smaller scales but 1:32 is about the smallest I’ll tackle, though a friend is trying to get me to try 1:43.