Here's some input to selecting the proper cams for your motor. They must work well with all other components or it is a waste of your money as it will never develop the power of it's full potential.

http://www.nightrider.com/biketech/selectcam.htm

Don't miss this section Bolt-in Cam Selector (http://www.nightrider.com/biketech/hdstage2.htm)