rear differential

ESS G3 w/ G4 intercooler (100mm pulley), Midnight Stg 2+ built A10R80 w/ circle d converter (rated 1300whp), LP triple pump fuel system, ID1050 injectors, full exhaust, full BMR/Viking drag suspension. Tuned by Lund currently running 3.55 gears as the car came with them, but I see A LOT of-if...

I’m in the process of adding a new differential. I have the front bolts in fine but the rear are giving me tons of resistance. To the point where it stops and I’m afraid it will snap the bolt. What are my options? I think both threads of the bushing are stripped. Can I get a tap to make fresh...

I have been experiencing rumbling & vibration between 50 & 70 mph, which kind of felt like the wheels were out of balance. After rebalancing them twice, the dealer even tried a different set of wheels & tires - no luck. They now believe that the drive shaft needs replacing - at 1100 miles...