[buggy5872]

if your working on vintage iron and want disc brakes and modern rear, isuzu NPR axles are the way to go. They are narrow, heavy duty and retain the old 6 on 8.75 bolt pattern a lot of these older trucks had. Can run 16" up to 22.5" wheels. My 57 lcf is on a 2003 GMC w4500hd chassis (same as isuzu npr) and the axle width was only 2 inches wider than the originals.