I need to install rear floor pans in my 66 coupe. While stripping the floor pan getting ready to cut out the old pans, I found that the previous owner had put a flat piece of metal in the rear foot wells and had welded it to the pans and the seat platform. I am afraid I will have to remove the seat platform in order to put the new pans in correctly. Are there any tricks involved to removing the seat platforms? Also how do you remove them without destroying the floor pan underneath. I have seen a drill bit that is made for cutting spot welds, but havent bought one yet. Is this the best way? Thanks in advance for the help.