Thanks Matty! I'm definitely going to be seeking advice from you,
I got it here:
http://www.rgxracing.com/clearbodiespage.html
It's basically a RGX made body for a Mugen MBX5R and fits the Matrix perfectly. Yup I had them paint the body for me I'm too inexperienced and lazy to do it When I bought it the body was 15 bucks I think and the single color scheme is 5 bucks, this was last year May 2006.

take care.