What size rim?
I have a front,32 hole,26x1 3/8 (590) crome with dull center from my '52 Sports thats in decent shape.
The rear was pitted so I had the hubs mated up to a pair of SunCR18's.
You can top coat Por15 with Krylon by doing 'Fog' coats when the por15 sets up tacky.