Goldie, Keoke raises a very important point. The rear seat pans do not use bolts. There are studs welded to the pan. If a stud snaps off, you have a real pain in the neck on your hands. I would take a wire wheel to the studs first to clean the road grime off the threads. PB Blaster is not a bad idea, but I often find I need to apply some heat to get the nuts to turn. This, of course, can be quite dangerous as the fuel lines and tank are there and the old seat material can catch on fire. I use a welding torch as the heat can be applied with pinpoint accuracy. If you plan to use heat, do not spray any PB Blaster on. It is flamable. If you use a socket, be very careful as the socket will cover the stud and nut and you will not be able to see if the nut is turning free of the stud, or if the stud is twisting with the nut.