360 truck rear-end compatible?

With that much power you can't go cheap on the rear. Leave that to the chivvy guys who puke axle shafts at the track. I have no doubts that the Mopar 9.25 can handle 550-600hp. The only thing I regret is I didn't install a Detroit locker and Richmond gears. I got a great deal on an Auburn sure grip and factory gear set. I'm making nowhere near 600hp but when I do I will upgrade. I do have a 1350 chromoly pinion yoke though. I have about $1100 total. That will only get you a new center section for a 8.75.