I know ADR does, according to this post. I need some center caps for my advan rims. I bought a set before but they are crap and $33 each so so I want to find some better ones and I think that I can do so for under $132 that 4 advans would cost. I heard of people that had the advan ones just fly out also.
http://forums.audiworld.com/showthread.php?t=375261

So if you have some please take them out and measuer them.

If worst comes to worst im just going to get a 73mm to ~2-7/8" hole saw, cut them out of Black PP or HDPE and stick them in my rims along with getting some OEM mazda ones to get the mazda emblem off of. I wonder that type of lastic the OEMs are made of. Anyone have a set they want to sell me?

Do a search on ebay for "tuner center caps". I had good luck with these on my Rotas. I even added carbon-look gel decals. However, the aluminum eventually turned hazy over time. They're cheap, though.