You also might want to try the Porsche Club's - Walter's Porsche Championship Auto-X Series events we run at El Toro. $60 and usually 12 runs! You must have a Porsche but do not have to join PCA to compete. (However, it's only $40 per year to join the Porsche Club of America and that includes two magazines per month and your local membership.
We have a lot of fun. Many times our sponsor's cater the lunch,bring out "Trophy Girls"
. We have had a rock band. We have had GT40's run, Carrera GT's GT3RS's, GT2's etc. We even let Abbott's Corvette run 
As a PCA member you can run anycar and we have an X class for "run what you brung" :gpower: In January we will post the events schedule. We hold about 14 events per year with two being at race tracks. http://www.PCAOCR.org" onclick="window.open(this.href);return false;. Also, not much equipment needed for the PCA Zone 8 Time Tirals. See http://www.PCASDR.org" onclick="window.open(this.href);return false; for the schedule.
Orange Coast Region has a Test and Tune Scheduled for Feb 22nd at El Toro. You can register online in Feb.
I checked the schedule and most SCCA events do not conflict with the PCA events so you can run in both series. Which I plan to do this year.
Have Fun! Steve