I am picking up a nice '54 6100 tomorrow. I was trying to get a head start on a few items that I know that I'm going to need but everything seems to be pretty cosmetic. I know that these cabs have a lot of interchangeable parts with the smaller cabs such as window felt and window seals both of which I know I need to replace. I also need to replace the floor rubber and the undermatting. Is the floor mat interchangeable? I was going to try to make a parts run before I pick up the truck that way I have parts to change out this weekend.