Hi Jake The rear diff you are referring to is really called the intergrator as the diff is actually on the top layshaft like a six gear rc10 the intergrator adjusts the drive to the front end and can be tightened for more 4wd etc. There should be ball races on those rear outdrives that sit inside th...
this only takes a few minutes and you have a new gear cover that looks much more like an old school one its just a very cheap hobby grade sand blaster that I have used and i have done both sides but you might want to try just doing the inside first and seeing how it looks as if you get too heavy han...