Originally posted by GoldFinger
Ceramic ball-dif is must have I guess.
Yes its cost more, but save your plates many times. You just need to polish the plate everytime you rebuilt.
I bought some ceramic diff balls on eBay a couple months ago (10 USD) and I am very pleased with them so far.
Even after not cleaning the diff for seven weeks, the diff still worked smoother than a brand new stock diff! I finally cleaned it last night just for the hell of it.