Easy to swap to 6-lug. All you have to do is buy two front rotors for a 2500 LD 2wd $25.-$45. ea. on Rock auto. If you can find a rear end out of a 2wd 2500 it will bolt in. But the wheels your showing have a tremendous amount of negative offset (compared to your stock wheels, or wheels made for your truck) so the cheap way would be to just swap in a 4X4 rear end of the same body style. Theyre a couple of inches wider than the 2X4 rear ends, so you wont have to run spacers to make it look right. The REAL cheap way to do it is with adapters. Find ones around an inch thick for the front and an inch and a half in the back.