THESE ARE GREAT HEADS, BUT THE CAM IS DIFFERENT THAN THE STOCK CAMS FROM ALL OTHER HONDAS. SO U HAVE TO USE THIS HEAD AS IS AND ONLY AS IS. IN OTHER WORDS NO UPGRADES AVAILABLE. BUT IF YOU JUST NEED A GREAT NEW HEAD TO KEEP YOUR STOCK ENGINE RUNNING HERE YA GO ............ COMES WITH ALL THE GUTS INSTALLED, IE ROCKERS, VALVES, SPRINGS, GUIDES, SEALS, CAM, CAM SPROCKET, SPRING SEATS, AND WELL ALL THE GOODS NEEDED FOR THE HEAD TO WORK. WITH THE PISTON AND 47MM TOP GASKET SET BELOW ON THIS PAGE THIS HEAD CAN REPLACE OUR "QUICK_FIX_HEAD" JF/HEAD