Well first I made my own diff using a revo front/rear diff which allowed me to experiment with the shaft length and make a rear brake. After that I bought one from the guy from ebay and am having him make a shaft to meet my needs (at a reasonable price). The pictures of my rear brake setup are on the
traxxas forum .
Why do you say to use the g2r if I'm goign to race? Its a nice setup but a bit pricey. Not that its not worth the money. Its made for the e-maxx tranny which I don't have but I am sure the revo one could fit on there but then there doesn't appear to be anywhere well suited for the brake servo and thats important if your going to have biased braking.