I am thinking about purchasing a 94 gsr and I'll have a few grand afterwords to put some performance parts on. I am going to do the cold air intake, throttle body spacer, header, exhaust and new ignition. I was thinking about putting some new cams in therem, not to extreme, but I was wondering if there worth the $400+? More power? More torque? What are some good brands of cams? OBX-R racing? Crane? Should I upgrade the valve springs also when I do cams?