I can't recall for sure but,was there someone fabricating a patch panel with the ribs for running boards on 48-52 F-1's?I sure could use one or a piece out of a junked board!

 

I'm not sure how much help this will be for your F-1, but ssj7kids (Steve) and I collaberated on a ribbed patch panel for his 53 running board. The die was just two plates - one with a rib and one with a slot. The .050 thick part was formed by squeezing it together in a heavy vise. Worked out pretty slick.

Here is the link to his gallery about it: Mater Running Board Repair

The bottom line is that if you can't find an old board to canabalize, you can make you own patch.

Good luck.

 

I've also got some pix in my gallery....