i took the rear end cover off so i could replace a leaky axle seal. I found out that my car has a torsen T-2 diff. I like it a lot, never any one tire fires under heavy throttle and the car launches awesome. I have pulled 1.9 sixty foots with 18 inch street tires. My question is how strong is this unit, i also have a ta girdle on it? Anyone have any problems with these?