[Yukon Jack]

Tony had to shim the crossmember because the 3/4 ton is not as tall as the 1 ton's frame. About an 1 1/2" difference he thinks. Width was the same. Tony said the whole front crossmember comes out and you can get a donor 4wd and the engine crossmember goes in with only having to drill a couple holes. Tony thinks the holes for the front spring hangers is in the 1 ton's frame. For the rear of the front springs you do have to drill the hole for the spring hanger through the frame. Also have to drill the holes for the transfer case bracket. Tony thinks the steering gear box needs to be from the 4wd.