that depends on what you want to do, all-motor, super charger, turbo charger. all motor go with more "duration"(stage 2/3 cams), super charger go with more lift and less duration , like a stage 1 cam set ,turbo probobly stage 1 or 2 depending. good luck
Stage 2/3 cams are going to rob a bit of power down low. you'll make it up in the midrange, but by the higher RPM's, you'll be zinging along pretty happily. These are nice mods and pretty easy to do. Make sure that if you replace the cams, go ahead and do a gear swap as well. It's well worth it, since you'll be able to dial in your cam timing to meet your power requirements and the characteristics of your new cams.