I bought a pair of type R camshafts. But the weird thing is they dont fit the description i found here is the link. My cams have the same grooves as the 92-93 b17 cams but they have the single ring on the innerside that the ITR cams have. Lemme know what you think. Very interesting. I already installed them and i have mixed thoughts if they helped or not. http://www.g2ic.com/forums/sho...12569