axle choice and engine choice are completely separate things. one rarely affects the other. :thumbsup: (unless you get a big v8 and puny axles, then one will affect the other :D )
early bronce axles suck unless you throw a lot of money at them. if I remember right, they have small ujoints, the front is low pinion, and the rear has little shafts and bearings. you'd be ahead of the game with late model XJ dana 30/8.25.
or are you referring to the kingpin dana 60? that guy have a lot of stuff for sale.