Mchat,
The body measurements will vary with wheel base. Also you need to figure out which chassis you are going to use to make sure to get a body to fit it. A good person on the site to talk to about this would be Bill Emerson of Emerson's Motorsports as he builds bodies and custom cars. I like your ideas and that would be a bomb once you get it together.
Hoffa,
I like your body. It is nice to see something different for a change. Keep up the good work.
Ron