Its strange you know, I've been trying to fihure out a way to mount the motor on a center diff like this for ages- the maxx steering assembly & gmaxx chassis rails do add a few extra layers of complication. RCAlloys can make big fat dogbones for you, any length you like for a nominal fee that is very reasonable. At best, the sketches I've done that allow a CD unit to be fitted to the Gmaxx require custom made chassis rails- far easier than trying to work around the stock tranny mounting location. Oh, and you might wanna take a look at this too:
MaxxBling 