ok so i got my merv on Sunday for my b day. i ran it 3 times for about 15 min each time on flat concrete (plus a few flips). i broke it out again today to do a little bashin, through 14.4 on it and thrashed it for about 25 minutes and CLICK CLICK CLICK.. yep my rear dif is gone!!! so i opted to buy a new rear diff and pinion, along with some aluminum turnbuckles, and aluminium tie rods, oh and not to mention new steel center and individual driveshafts all around. not even a week old and she is getting some major hop ups. ill post some pics up as soon as i install them all.