You should see the Dodge I've got coming. In the pics that I was provided, the DEF tank is 4" off of the ground. Why Dodge copied the worst thing that GM has ever done, is mind boggling to me.
I'm considering trading up to a 7.3/4.30 Tremor instead of building my Ford. I think I've got one of the bad wiring harnesses acting up. Will see what my tech says. It should be an easy fix once Ford oks a warranty harness.
As for the rear springs, block concerns. Call Carli. They have Deaver springs that can go in with out blocks. And they aren't a fortune or anything. These trucks will wheel hop in mud. But it's been more of something that I blame on lame AT tires, than the trucks fault. The traction control does it's job, which makes it hop worse. Try some Cooper stt pros.