Actually the Chevy 1/2 ton 4x4 is 6 on 5.5, while 3/4 and 1 ton are 8 on 6.5. You will want to replace the stock rear axle in that truck for prerunning or hard playing anyway, plus wheels for 6 on 5.5 are common, so the answer is probably yes.
Its not an easy swap. The 5 on 5 trucks are 2wd, so the 4wd parts will not fit. You may be able to redrill the hubs you have now, or step up to a kit with new uprights/spindles and arms, but that will be expensive. Check with BMS and others who make LT kits for chevys.
Actually i had a 93 silverado 1500 2wd and installed a 6 lug rear end, so to match the rear i converted the front to the 6 lug,
hub/rotor off of a 93 2500 witch was 6 lug. the spindle and bearings are the same. and it was that easy you should ook into that before anything else.