Turns out my wheel has been repaired before, so it's garbage now. I also found out that I have a set of 18x8/18x10 not 7.5/9 like I thought. I ordered a single replacement for now, but there has also already been a 986 at Nationals on that set using option code IXRB. I ordered a 2000 Porsche Tequipment Guide and Order Guide to show that they were available.
https://www.youtube.com/watch?v=yPJTdE4nNkA