New here and needed some help.

[squeeforever]

you can make bulletproof diffs with aluminum case, aluminum diff cup in the front with robinson racing ring and pinion, and in the rear i would get a spool with robinson racing ring and pinion. also i agree it would be better to just build it from the ground up or just selling what you replace. like a new evx is like 75 dollars, ect. also i wouldnt go with the integy or the racer x i would go with just a true trac racing setup for the rear to illiminate the rear turnbuckles.