JUST WONDERING,MY CHUM HAS 99 ZRT 600 AND I AM THINKING OF A KEYWAY FOR THIS SLED,THE 95,96 AND SOME 97S ARE FAST,I KNOW THE PIPES ARE DIFFERNT AND THE AIR BOX,BUT WITH A POWER BREATHER AND KEYWAY SHOULD HELP,WHAT IS THE TOTAL ADVANCE ON SAY A 96 COMPARED TO A 99,WHAT KEYEAY ARE YOU GUYS RUNNIN OR SHOULD I JUST PUT ON A OLDER BOX BEACUSE HE DOSENT HAVE FLATSLIDES ON IT"""