Now noticing that the restoration suppliers are selling the same type of replacement socket as I have as sockets that fit '51-'52 Chevys, but There sockets have a neat little tab for a spade connector to connect for ground too. I'm going to try mine first, and if it works but has a sketch ground, I'll buy 2 of those sockets and run a 12ga ground wire right to a factory ground connection, and create seperate a ground for each socket back there, so that ground is not an issue. I could easilly just go right to the trunk floor with a self tapping screw, but the floor is in great shape w/ factory primer still and I'd rather not create a point of corrosion.