Sure thing.
Here is a link to the PCA zone 8 website with a calendar of most of the events in our area. There is also a list of local PCA clubs. Lots of benefits to membership for Porsche owners whether you wish to track your car or not.
http://www.pca.org/zone8
I am a member of Grand Prix Region based in Long Beach. We have about 500 active members from all over So Cal. We have a tour to Morrow Bay in Jan. that might be interesting to you. You are welcome to join our region if you like. We are a pretty mixed bag of people from 18 to 80 and cars from new GT3's and 997TT's to fully restored 1954 356's and everything in between. Lots of Boxters. Here is our local website:
http://gpx.pca.org/
Willow Springs is just south on the 14 from you in Rosamond. There is a Road Racing, DE or time trials event there every weekend. A Porsche event about once a month from Sept. - May. Hope to see you out there Boxin'