I'll try to find a length on those old pickup boards, i've considered that idea but to me they look short. Mine need to be 63 inches.
Bet I can have a local sheetmetal shop fab up a pair way cheaper than repops, its just heavy gauge steel with one 63" rolled edge and one 63" angle edge, I can trim the corners and add some channel rubber. I would figure the bracket mount and have them welded onto the bottom of the boards.
After mounting i'd be ready to paint the car, I would prep the boards and have them sprayed along with the rest of the car (Sunburst orange metallic)
Then custom cut the rubber mats and WALLAH.....I just answered my own question