Now thats why I said on my old truck 
My runner is a different story. I have 3" blocks in it and its about level as the front. I figured I got about 2 inches of lift out of the rear of the runner (without the blocks) and i figured I got about 3.5-4 inches of lift out of the rear of my longbed truck with the exact same springs. If you had to you could always get the springs and then get them rearched (about $100) but then by the time you buy the springs ($50 for springs in chico from pnp) its about the same price (not quite) as MC springs...
Id say just get the F150s and if you have to just run a 1" block or somehow get as much as you need. Personally I like the rear squatting then having it sit higher then the front.
gotcha
Only reason I am thinking of doing it this way: springs are free.
