Ive been thru three LSD so far and will not put another one back in my tranny unless I get the GM one. I ran the CYA diffs and all three took out my tranny each time. Ive since put a stock diff back in and almost always get a two wheel burnout. Ive raced the car for 2 yrs now and can pull 1.7 60's with it. I recently pulled the stocker out to check it and found that I broke the cotter pin that holds the shaft in place. I replaced the cotter pin and have no issues with it now.