mine is a 1500 4x4 and it has 6 lug wheels, and its a 10 bolt rear. other words you don't have to get them off of a 2500, if you can't afford to get a 14 bolt axle (1200 or so bucks) try and get just the 10 bolt axle shafts (75 bucks each), make sure your spline count matches though, i know that there are at least two different once, don't know which one is used with what though.
as for the front end, you would have to get the spindles, if you go with the one off of a 4x4 you would have to check the mounting, get the end piece of the CV joint (to hold the bushing in place even though you don't have the front drive) and make sure it all clears. doubt if the front would work though so you might be better off going with the 2500 2wd spindles.
And why would you want to get the 6 lug anyways? that smells rice to me, all show no go, if you want to hide the fact that you have 5 lugs just get yourself rims or smething that hide the fact, probaboly could get that done cheaper and get nice rims while at it.
Will work for mods
Current mods--> 31x10.5x15 ProComp MT, 15x8 AR767 rims, K&N, MSD Ignition Coil.