i have an '04 F150 4x4, with a 6 inch lift. I want Toyo Mud 37's, whats it going to take? For the rear im prepared to put in a leaf to get them to fit.

As far as the front? I know ill rub, but how bad and im willing to trim, will it be major trimming or minor?

 

I think the answer to that question depends a lot on the offset of the wheels that you have on the truck.

 

20x10 Hulks will be going on. it's a 4.9 backspacing i think? -25 offset

 

With the 6" Fabtech and my Dirt Logic coilovers cranked 2" I fit my Toyo M/T 37's with no problem. They are on Mickey Thompson classic locks with 5.5" of backspacing. I also have a 2" AAL and 5" Fabtech block in the rear.