My stock LSD was barely working like most of them out there. Tested the breakaway torque at about 20 ft lbs. A friend and I both ordered the Weir stage 2 kits for our cars. Installation is very straightforward. Everything fit perfectly. First you separate the carrier and exchange the stock spring for the spacer and belleville washers. Then add the shims on each side behind the clutch packs, set the spider gears in place and keep exchanging shims until you have a proper backlash reading on the spiders gears. At first I set mine up too loose by using the thinnest shims. Breakaway torque was 100 ft lbs. The car drove just like stock, no noise or skipping. The diff locked every time in a straight line, but only about 3/4 of the time while drifting, so back out the diff came. This time I made sure I shimmed it as tight as possible, which ended up being the thickest shim in the kit on each side which still kept the spider gear backlash within spec. Much better! There is some tire skipping on very tight corners only when on the throttle but nothing like a welded diff. Still no noise. The diff locks hard every single time and stays locked while drifting. My torque wrench maxes at 150 ft lbs and would not make the diff slip. I used a breaker bar and applied at least 200 ft lbs without slipping until the tool I was using started to twist. Overall I'm very happy with the kit, I just hope it lasts. The clutch plates are steel and showed no signs of wear so hopefully they hold up well. I used Valvoline conventional 75w-90 limited slip gear oil which seems to be working fine. One last thing, I would recommend just getting the stage 2 kit over the stage 1 as it still behaves just fine on the street!