hello i have a 4l60e tranny with 100k on it and 2500 stall converter $300 plus shipping still n car so u can see it works perfectly.swapping to turbo 400 w/trans brake.3.73 posi rear end works fine all new bearings an seals from side to side does have a little noise on deccel minus brakes $250 plus shipping still n car so u can hear for yourself.swapping to 12bolt if interested let me know thanks 4 looking