I read the previous comments on the forum relating to the rear driver side plug replacement. I have been doing this a long time. Just replaced what I thought were the worst, plugs on the C5 vette. Had to have the wife use small hands to replace the same rear driver side plug for me. But, on this car, the 66 fury, one has not room to get to the plug to start him, imo. I was going to take the recommendation to remove the joint cover, but there is one screw on the inside....very little room to remove. So, I jacked the car and got the old one removed and the new one started from the bottom, even with my large paws. Used the wrench, flex ratchet with socket, to loosen and tighten from topside, and pull and replace from bottom....I could not do it otherwise on this car. Big hand luke....so be it.