My BL Savage

Solidworks finally came in the mail, I just have to learn how to use it!
I have some good ideas in my head that I can't wait to draw down for everyone to see, I just have a few questions..
In a slipperential setup, will a Revo slipper be able to handle the abuse I'm going to put it through, or should I try a sprong slipper sort of setup? I've also seen that new single piece slipperential, which looks promising.. but would that be able to handle the power?
I'm also planning on extending the chassis even more than the FLM one is (probably another 30-40mm), does anyone know of any bodies that won't look goofy?
Thanks!