[toddol1971]

Ya know, I have been wandering this myself. I do know that whenever i have looked up lift kits for my 3/4 ton 4x4 that they always list 1/2 & 3/4 tons as the same part #. This tells me that there using a 1/2 ton, or less spring rate. If you go this route you'll not be able to haul as much weight as you could have with the stock springs. I am trying to figure this same dillema out for myself. Theres a place called Eaton Detroit Spring that makes orig springs for our trucks, & can make them any way you want them, up to 3" of lift. I think I will be going this route, only I want my spring rate just a little less than the 3/4 ton, cause I will be putting Firestone ride rites on to help with a load. I also think 33" tires look to small with a 4" lift. At least the BFG's do Parnelli Jones Dirt Grips look ok however. This is because PJDG's 33" tires are taller than the BFG's. I am still debating on a few things myself. As far as the stock height diff. I'd say it wouldnt be more than an 1" or so. I would think most of the diff would be that the 3/4 ton springs dont squat as much. I hope this helped ya out. Good luck