Desert Racing/Baja Experience

As I've been building my 4Runner, I've been giving serious thought to racing the truck. I've started doing some research on many of the necessary requirements (Which Class to race in--I think it's Class 7, but anyone with knowledge on this, please chime in--upgrades, equipment, cost, etc.).

What I'd like to do is to have dialogue with those who have experience in this area, whether as a driver, co-driver, logistics, mechanical/crew help, etc.

If that is you, please respond, as I have a number of questions, and, perhaps, many that I haven't even thought to yet ask.

As a point of reference, I've been looking mostly at the VORRA series in NV and CA (because of location; I'm in Colorado, and distance of the races).

Many thanks in advance.

Joseph.