In my pursuit to mount new turn signal lights into the front grill of my modified J10-M715 truck, I came up with this plan to make adapter rings that would bolt directly into the holes provided and receive a standard rubber grommeted or bolt in style light assembly like you see on most commercial trucks and trailers. The rings would be 7" OD, and 4.5" ID, with 1/4 holes to line up with the existing M715 grill. Anyway, I got a local Laser Cutter to quote me on making them, but found thay had a minimum order size which made it impractical for me to do just one set.
My costs would be the same whether I get 1 set or 10.
If I ordered 10 sets, would anyone have an interest in buying some from me for about $20 per set?
Here's a drawing of what the rings would look like and a sample of the lights I purchased.