I think you should go with Miata..the L chassis will give you more under steer.
thanks, that is what I was leaning towards. I like that that body is also really low, the roof that is. Some of the bodies are so high that I think it raises the center of gravity a bit. Also w/ that miata you can tuck the wheels under it a bit to get the body really low (you can't do that w/ some of the bodies as they have wheel arches that get in the way).