a body rear end ? 8 3/4 vs dana 60

I have 440 With aluminium heads with some m&h tires in the back ran low 12s with a 8 3/4 (489) with no crush sleave never had a issue breaking it over 20 passes with it. A friend of mine has a 70 cuda with crate 426 hemi with a 8 3/4 and he has never broke his either. I would imagine some old rear end may have issue's or with 741 case but if you have a fresh rebuild on a 8 3/4 with the crush sleave delete from doctor diff. You will be fine !