[coolhandcountry]

I had a little bit of problem with the diff gears. Never had to much until the 7xl. I ran the aluminum diff cup with the fastlane bulkless. I have a pole head on at 20 mph or so and didn't hurt nothing. Did you shim the side spider gears. It makes them stronger. I going to step up to the 7.5 rears. I am tired of having problems with the stock setup. I want to put another big motor on truck to. I like power. :)