If you have the OEM Ford wheels, there's an extra 7/16" hole in the 8-hole bolt circle. On ours, the wheels were stuck and I did a lot of beating to get them off. Front offered little resistance. Rear outers, moderate. Rear Inners, Awful! I threaded those 7/18" holes with a 1/2" x 20-thread (NF) tap, and carry a boat trailer lug bolt. Cranking it down through the hole, against the hub, pushes the wheel off the rust. I installed the rear outers one hole away from directly opposite. That way the hole in the outer can be used to push against the inner. Otherwise, it'd try to screw the outer TO the inner.
