PCA entries are limited by the number of cars the track will allow, there are a few PCA races which sell out and this will be one.
The link for the PCA schedule is listed below. The COTA race is not listed yet but the region folks have posted the news on rennlist. There are 5 races in or near the texas regions this year
www.pca.org/Activities/ClubRacing/Schedule.aspx
march at TWS
April at NOLA
May at COTA
October at hallett
October at eagles
I am currenly planning on attending these 5 races:work schedule and family schedule permitting
There are several new SP1 (944 spec in PCA) cars built, bought or in progress for this year. With Coomes and Blazer each building a rental car we are hoping for 10+ at each PCA race. With the draw of COTA it is possible for 15+ but people will have to register fast