Technical Ford Center / Buick Hoop Reverse Wheel

I'm pretty sure it was Buick [maybe chrysler?] as they had the exra pin holes but taper seat lug nuts, I put them on '51 Ford PU hubs. I dug up an old pic but too small to discern center.

 

Chrysler Imperials had a 5 on 5.5" 15x6 with guide pins. That's probably what you're thinking of

 

When looking for Buick rims make sure you get the 6" wide version, the earlier 6.5" wide ones are too small for the Ford centers and won't fit.
They're harder to remove the centers but I actually prefer to use Cadillac rims as they are spot welded and you don't have to worry about your plugged rivet holes leaking if you're using them tubeless. They also have a safety bead on the (formerly) front side.
56 Chevy wheels I reversed a while ago, just used the stock 5.5 wide rims though

 

WOW!!!!! Awesome looking set of wheels!!! These things are stunning! Great work!

I am working on getting my hands on some Buick 6” ers…hopefully I can make it happen.

I am not against using the 5 1/2” Ford hoops I have tho