Drag Racing With Clutch Type Sure-grip

They do break. I recently bought a used unit that looked ok but exploded after three passes behind a 450 ish Hp 340. Apparently it came out of a 12.0 360 Dart. It was a tough pill to swallow. Whatever you choose to do, I’d buy new.

You bought a USED race car diff.
You bought a USED race car diff ! ! !