build a gmaxx and i need help

[suicideneil]

You need the HB drive cups, the 1/8 diffs have a larger input shaft size (8mm vs 5mm). Read that link I posted, all the info is right there.

You can build a truck using a center diff instead of a tranny, but it will be a custom job Im affraid; either home made, go to a machinist, or see if Mike releases one in the future (we're all waiting for a 3906 chassis version presently).

There are dozens of different emaxx builds, so I strongly suggest reading around for info- you wiull soon see what parts are good and which arent, and where to find them (ebay, towerhobbies or amain usually, though Mike sells some good stuff too).

Shocks = look around and see what other people are using, but 4 truggy shocks will work fine- rc8t for example with stiff springs.