Well, I was at the track Aug 3rd and spoke to Bob himself. He said that Friday Aug 17th was going to be a "Porsche Day" and that we should have NO trouble running with those guys. He made no mention of having to join the PCA (Porsche Club of America) in order to run. Just the regular $60/$48 deal that we had last time.
I'll try calling Bob just to make sure though..
Alex