I think Carl meant that he didn't like lap weld joints, but those can work if you seal them up well. You'd want to put some good epoxy and undercoating on the bottom of the floor anyway.
If the riser flanges are in good shape, you can butt weld half way back under that. But you'd need access to the underside to do that weld. Might be a little tough with the cab on the frame.
I butt welded my floor panels in, but there was enough good metal in front of the seat riser to do that. I did have to replace the set riser flange on the driver's side as it had rusted away. Had an opportunity to use a friends metal stretcher to form the flange around the corner. That's a cool tool. I also replaced a section of the floor along the side of the riser in that area with a patch that I fabricated. I made the butt welds of the purchased floor patch panels from the bottom just under the riser flange. Here's a pic of that area on my cab floor.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
