[RACER X #99]

Scott,
It seems like the components are just not up to the abuse you are giving them. Just like the pro racers you will have to find different parts(heavier duty) that can stand the abuse. Those parts could probably last forever on the strip and street but road racing is the real test of durability. While I don't have any solutions perhaps the supplier of the rear end components can suggest a heavy duty replacement assembly. Those 9" Ford independant rears were from CWI weren't they? I don't ever remember hearing of a 660 hp road racing Cobra so you are probably going to be the guy that sets the bar for the rest of us.
Good luck,
McCranky

BTW are you still planning on Elkhart Lake in Sept.?