Go to Hoyt's web site and look under technical and they'll list years and bows. I'm looking at a spec. sheet for 1998 and it has the Tenacity 2 with PowerFlex limbs and command cams and also performacams. Besides being different cams they are also different string lengths for the same draw, 1/2" to 1" difference (cables are the same). So besides the cost of the cams you'll also have an additional cost of a string. I'm guessing but would expect it to run $100.00-$200.00 (depending on brand string) for you to do it. For the year of the bow don't know if that would be too costly or not. Good luck.