I am sure the two 4x4 1 tons are the same I have worked on both of them. Haven't had a 4500 in the shop to look at. I think the 4500 has a 1k more rating in the front. Mabe it is just springs. We did just have a ford 550 in for rear seals on that Dana S130 rear axle, it's big stuff looked good. But it didn't have a two pice seal in it, thats a rip. I would bet nether does the Dana S110 in the dodge 4500. You got to like those square tube axles.
93 250 2wd xc 354 auto 264k
04. 5 3500 4wd cc dully 373 6speed 87k