Wanting to build a 4door, 4x4, dually with a Cummins (gonna get rid of the Burb, kinda useless for farm work lol). Anywho..... I found a good deal on a 3/4 ton 4wd rolling chassis but was curious as to whether or not the 1 ton, 2wd frame is that different from a 3/4 ton 4wd frame or not. Just...