So i've been pondering this for a while now. It will soon be my b-day and as it has become the norm, my parents are going to give me some $$$ to spend on the rex. I've been looking at getting a new cam but I dont have much real-world info to go on. What kind of hp/torque gains can I actually expect? Also, how is the idle with the cams. For refrence, I'm using a z6 head if that makes any difference. Whats the difference between stage 1 and 2 cams?