Depending on the mileage of the truck, you'd likely have 1/4" to a 1/2" of front rake at 2", with higher-mileage F150s having closer to that 1/2". To keep the stock rake, you'd likely need either a 2.25" or 2.50" block, depending on how much you actually gain in the front. The UCAs do have Zerk fittings for the bushing which are made out of PTMEG. The rear shocks can be used with up to 3" blocks without issue. new bump stops aren't required unless your stock ones are looking worse for wear.