Po-Po wheels are BBP. My 74 has them done in gloss and I did satin on the 72. When I had a bunch of stuff powder coated I got an estimate on blasting and coating a set.....any color would have been under $500. I would muck around with the wheel in place. Plain wheel with chrome lugs. I like caps. Those centers may look good in argent, silver, body color?
I just replaced all those brackets on the 74.....since I broke 'em. All used of the shelf of things we never throw away because we might need them!