OH, YOU'VE. "BUILT YOUR CAR ENGINE " YOU SAY ? WHAT CAM LOBE AND LIFT DO YOU HAVE? YOU'RE NOT SURE ,BUT YOU THINK I'M MAKING THEM UP BECAUSE HOW DO ENGINES LIFT THINGS ! IF YOU'RE NOT SURE IF A INTERNAL ENGINE PART EXISTS THEN YOU DIDN'T "BUILD IT" YOU PAID TO HAVE IT BUILD.