RE: How do I do the diff cup mod for the fun factor?
Find some 10mm compression fittings in the plumbing section of your hardware store, sand the inside of the fitting, and glue it to the dif cup.
Or you can try the magnum dif cups they are suppose to be stronger
I have my modded and they havent broke yet, and I even hit a fence post with my truck, and the only thing on the front that lasted was the cups
Tiny