I need to go back and read this thread over but I saw 48 Plymouth and had to read it. I have a 46 Chrysler 3 window bus. coupe so of course I came here to see what you have. The metal on these cars a THIN as ice and the floors in mind look great with surface rust but they can be poked through with a screw driver still! I need to redo my floors like your doing here. I will definately keep up with this post. It's looking great though and you have a nice car! Even though these things look huge, the metal is thin but not a single flat panel on them so it keeps them rigid/strong and they weigh less than a Toyota Corolla supposedly.