I spoke to Bill at UVIRA, he actually sold the company but still does the special plating on the side these days. Since this work is done from his home, you must first have someone nickel plate the reflectors and then send to him. Ross sent me his reflector and I will take the pair into the shop on Monday for the nickel phase. Thanks Ross and Gordon.
BTW, several of the Model A Ford suppliers like Snyder's and MAC's are selling a 6 volt LED light bulb as a direct replacement for the stock blubs. They work on 5 to 30 volts, not polarized, I've purchased a pair but won't be able to test for a while.