I have just broken the rear diff in my Cossie 2wd, 3 doors.
The engine is now appr. 380 to 400 hp. I was driving in 2nd gear in right turn and on 3/4 throttle and suddenly came a loud noise, the differential gear was gone.

What "Rear Diff" are Cossie owners using for e.g. drag racing or just street racing from 0 mph? Can the std diff in Cossie not take 400 hp?

 

I kept breaking diffs when mine was 400bhp, i went to a Gripper plated and has been ok since.

If you do a search for diffs there is plenty of threads on the subject mate

 

Thanks mate.
Have you any further info for "Gripper plated"? I don't know them.