Most PCA Regions give National permission to accept members on their behalf. A few prefer to give their own acceptance, thus the 'IF'. Regions have their own by-laws and while the majority mirror the national by-laws when it comes to membership, some modify them.
You do need to own a Porsche to join the club, but once you're in, if you become Porsche-less, you can still retain your membership as long as continue renewing. If you still have quesitons, you can email Vu Nguyen at the national office
admin@pca.org