Just in case anyone has any doubts whether or not the diff cup mod works, let me show you it does. I just hit a curb hard enough to do all the damage you see below and the diff cup did not break. It actually pulled out of the differential and flew about 8 feet away from the car. Take a look at the damage and you will see what happened. The bottom suspension arm came out of the wheel hub, the shock came loose, the tie rod popped loose and the cv shaft pulled the diff cup clean out of the differential. I was able to put everything back together with the same parts, but will take it easier till my replacements arrive.