Matt, first welcome to the southern half of the land of fruits and nuts. We have a great club out here in So Cal for Xterra owners but all nissans trucks are welcomed on the monthly off road adventures. It is called Southern California Xterra Owners Club website is www.sccxterra.com
lots of great people and many live near you. I live down in Dana Point in South Orange County right on the city border with Laguna Beach. Every couple of months one of the members will host a mod day at their house if you need help with installation of a kit or some part or repair for that matter. Check it out and say hello to the gang. Another nissan site in cornc.com otherwise known as California off road nissan club. Not a whole lot of action goes on there but I still hold hope the site takes off and does well.