77 chev 02 gm diff compatability

[99monte]

I will be resurrecting a 77 chev 10 in the spring,but am currently stripping an 02 gmc 1500.The rear diff in the 02 (3.42,posi,disc brakes,6 bolt) is crying out to me to be used.Has anyone done a swap like this? My first concern is the wheel bolt pattern,I want to keep the factory rims.Is there an axle that will fit in this housing with a 5 bolt pattern,or do I need to get these axles (and rotors) drilled for a 5 bolt?I haven't looked into any other compatability issues I may encounter,Any thoughts?