'05 9.25 rear rebuildable?

Hi everyone,
It's been a while since I've been on here (had a lot going on). On my '05 Ram I blew up the 9.25 rear. It's locked up (but will move in reverse... don't know now far, I really didn't want to do any more damage). When I crawled under the truck the pinion is just laying in the rear end and can be "floped" around like it's not touching anything. I'm planing on poping the cover off to remove any chunks that are keeping me from moving it further up my drivway.
From what I've been reading this is somewhat common. A used replacment is salty so I was thinking about just rebuilding it and useing stronger aftermarket parts. I've never dove into a rear end rebuild. What should I be looking for in my old housing as far as if it's rebuildable? Should I replace the axles too?... New ones aren't that expensive. I want to do it right so I don't have to worry about it again.
Thanks,