I'm running (and have been ) running a 8.2 10 bolt from a 65 chevelle in my 79 malibu which is raced every weekend I built the rear last spring it has all new bearings ,Richmond 4.56 gear , moser mini spool,moser street series axles supposed to be 25-35% stronger than stock ,c clip eliminators and a cover with girdle? I leave at 2800rpm footbrake racing 60fts 1.55 I've got a Transbrake in the transmission I'm wanting to start playing with the converter goes 4200 and I'd be popping button 3200rpm Ive got iceman uppers and lower control arm with sway bar motors putting out 400+\- hp car weighs 3240 with me in it what's your thoughts on rear end most say it will be ok up to 550hp then others say it shouldn't hold up to what is doing now I got a real good deal on parts I built rear with and the housing was free got 500.00 at most invested and it's all good components that's why it's in there