Well did'nt this turn into a ******* contest? Anyway as stated like 50 times now, no factory lift. The factory installed 4" rear block will be found under every single FACTORY 67-77.5 f-250 4wd, thats just how it was. The block is simply there to componsate for the spring hight "same springs as under a 2wd f-350, not 2wd f-250 wich already had the 3" rear springs starting in 1973. So with the rear springs coming from fords 1-ton 2wd parts bin they needed the factory block to make the truck sit level.. Just like under any 80's-90's ttruck, the rear springs are the same as a 2wd with a block to make up the diferance. Now that you know the truth, you can tell the next "factory lift kit guy" that he's wrong and explain the truth.. Not taking any stabs at anybody, just trying to show the facts. Thats how you learn, i was'nt born knowing this stuff i had to learn it...