I have to make the same plates for the back and was trying to decide if I should spot weld them or just leave them with a big washer on each bolt to hold them .
I think the spot welding (or plug welding like I did) the support plate would make a stronger attachment point for the running board.
Kevin, great idea about the seam sealer.
Last edited by Phak1; 12/27/20247:22 PM. Reason: Additional comment
Phil Moderator, The Engine Shop, Interiors and Project Journals
1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes Project Journals Stovebolt Gallery Forum