build a gmaxx and i need help

[suicideneil]

Yes, they sell normal bulks and combo bulks for 3905 & 3906 diff gears; I must say though- dont waste your time or money with the combo bulks. Buy either the standard bulks and some complete 3905 diffs from ebay, or buy the Hybrid bulks & some 1/8 ofna/ hotbodies diffs from ebay or Mike. The combos do fix the problem of diff-case flexing, but they dont fix the weaker spider gears or generally poor mesh of the ring & pinion gears ( the teeth dont match up all that well, even when properly meshed ).