I had a standard diff broke that at 350. Fitted a gripper and the guys told me your not brake that but you will brake the cwp. Had an m.a.d 500bhp set up and yep took all the teeth off the cwp coming off the roundabout in 2nd with r888’s. Absolutely no wheel spin it griped and went bang. Re built it with a hewland engineering shot peened and super finished cwp. Didn’t brake that. But it’s for sale now as I fitted a 6 degree rear beam and a supra diff with a weir kit