Most yards will bone ya pretty hard for that combo. I'd guesstimate at least $1,000. /forums/images/graemlins/shocked.gif But the smaller yards can be more reasonable, and the pick-n-pull type places can be even cheaper, maybe $200-300 for the combo, if you can find what you're looking for.
Make sure that you know what you need before you start the hunt. If you plan to run 35 inch tires, then a set of axles with 3.42 gears is NOT what you want. You would spend anywhere from $500-1200 more to have the gears swapped in both axles. /forums/images/graemlins/eek.gif 4.10's aren't too hard to find in 3/4-ton trucks and are a great ratio for 33-35 inch tires.
Watch the papers for someone parting out an old truck, or even selling a complete, non-running one for cheap. Also keep an eye on the For Sale forum here. Stuff like that does turn up from time to time, but unless the axles are nearby then the shipping can add considerably to the cost.
