Re: Dana 60 VS. Rockwell
It depends on what type of wheeling you plan to do. With the Rockwells, keep in mind that you will need at least 44's to go with the 6.72 gears. You also need to ask yourself if you really need the extra weight of the Rockwells. Dana 60's will be much lighter, give you more ground clearance, and still handle 44's behind big block power, (yeah, you're still gonna break things sometimes). However, a set of Rockwells for a grand would be hard to pass up if you've got the cash.
BTW, is the donor truck a Ford or Chevy. Reguardless, both should have a 60 front with the Chevy having a 14bolt rear and the Ford either having a Sterling or a Dana70.