Good question Rob.
Do you have an original center to see if the Porsche center fits? You can get painted crest centers from Suncoast Porsche, and several others, but first you have to see if they fit these wheels.
If not, and you want to go with blank centers, check if the wheel company has them. If not, I'm sure you can find a local machine shop to make you four plain aluminum centers.
When you go to the machine shop, don't use the P word, or they'll charge you three to four times normal cost.......
