Adding a larger rear block? HaloLifts has the U-Bolts you need and will accommodate a 2" or 2.25", 2.5" or 3" blocks. This is just for (4) u-bolts and the hardware.
Currently our U-Bolt supply is empty. We are due 1000 U-Bolts in the next week of so. Of Course you can still order just the blocks. These fit your 04-08, 09-13, 14-20, and 2021 F150.