I'm not really looking into getting the Skunk2 stage 2 cams because that requires me to buy new valvesprings and retainers. So I've kinda decided to chose between the CTR cams or the ITR cams. And I'm just wondering if anyone is positive on which give more power or if they are equal. And what is the difference between 2000 ITR cams and 2001 ITR cams? Or is there a difference? Thanks