Id like to do the same when i run my sc10 4wd indoors.
Making the switch to ball diffs. Would they be a direct drop in?

Thanks for the info about the weights, I dont think id need them
right away. Im running a Trakpower 6800mah 70c stick pack lipo,
with a 4500kv copperhead system. I have not bought the brushless system
or the Lipos yet, but im buying them both one at a time.