Whaddup SLO, Many moons ago I acquired a set of Rally wheels without knowing about the codes. As it turned out there were actually three different types, one w a spacer ring welded to the back. It was only then that I noticed the subtle differences between the wheels. They worked, but I eventually purchased a nice matching set from good ol' Gene Guarnere of ABandG(can't recommend highly enough). As Ed mentioned, the masking is not difficult, just very time consuming. The templates make it a little easier, and can be found on eBay. I have repainted mine several times over the 35 yrs I've owned my '65. The 2nd time I used the templates, but chose not to bother w them the 3rd time, even though I still had some left, so there's that. I find certain jobs, such as meticulous masking, to have a Zen-like quality. (I'm retired & have plenty of time on my hands). I would add that, IMO, on certain colored cars the silver or light grey painted centers kind of wash out. Dark grey or black centers emphasize the wheel's great design much better. & since you're not sticking to stock it doesn't really matter. If you're looking for cheap & easy, Krylon SatinBlack w several clear coats looks great, but something more durable would be better. The local bodyshop that recently painted my steering wheel offered to paint my pre-masked wheels for $50ea. so I may go that route if I'm around long enough. Something to consider. Anyhoo good luck!