Jim Carter and the Filling Station have these large washers as part of their kits. Looking at my '51 it is hard to tell what gauge they are and whether they are spot welded due to paint over previously corroded metal. I would want a heavier gauge, like 16g or 14g. Evan, I bet we could come up with something else for you to duplicate if you are looking for a project! It is cool you can do this, nice job.
Kent


1937 Chevy 1/2 ton
1942 Chevy 1/2 ton
1947 Diamond T Model 509
1951 Chevy 1/2 ton
1950 Chevy COE Model 5700 ~ "Barney" ~ And more pix