RobK: Please ignore anything I say past this point. *giggles*
So... lets game this. There's no regulation saying we need one peice bodies. If you want a competitive body with a low CG, good downforce, and doesn't look like roomba... There are ways to do this. Get some .01 lexan, pop two copies of the body you want, paint the super thin shell, cut away most of the second shell, only leaving the spots where you need strength. EG, across the body mounts, the lower edges of the body, wheel arches, A pillars... glue in the second shell.. Get youre 90 or whatever gram body and the superlow CG that people want.
Or run outside, where a big blunt body like a caddy is gonna do you better than a low CG body.
now.. what's the best way to bond lexan that won't add weight.....