There's a local Jeep club in Mt Home, and a big one in Boise. The one in Boise has a website, but the one in Mt Home I've only seen on the road, never an advertisement. I've asked around at the base a few times to some guys I know who have tricked out offroad rigs but they don't know anyone in it...
Every time you call a JEEP a "car," God kills a kitten. Please, think of the kittens.
Go out fast. When it hurts, go faster!