Razor, Were you still running the stock shaft on your old car? I've never heard of a issue with the TTA shaft either but I've seen posts were the GN ones have broke and I was worried about how it would be with the transbrake. I think (and hope) my car will be close to 500 hp to the wheels when it's done and if the stock shafts can handle it I'll probably wait till the rear breaks becasue I'm sure it's going to happen soon. As far as I know the rear is still stock and the car has 124,000 miles on it, but everthing else has been replaced and some things twice :redface: I just want it to be right and not have to worry. Thanks for the help. Jason