Upper Stable loads

Today I went out to set up the upper stable load install today. Sprayed the bolts with some WD40 and let it sit for an hour. Had a lot of difficulty trying to get even a off set closed wrench on the bump stop bolt. There is no clearance to even turn with these wheel well inserts on my ram Laramie. Do not even know if a ratcheting closed end would work. Was thinking of buying at air ratchet to hook up to my craftsman air compressor and try this on the bolt nuts. Would this work or should I just take out wheel liners and mud flaps?