Mixed answer here for you with my experience. I put a Livorsi Vortech system on my stock 502. Bad news: blew a head gasket and a couple Bravo 1 drives. Good news: went from 64 to 80 gps, after an XR drive and rebuilding the motor the correct way I never had another problem. If I were to do it again I wouldn't hesitate as long as you keep the boost low. On a self-serving note I took the system off before I traded the boat in and would make you a great offer for sale. It was fuel injected and the computer remapped which is something you would have to get done to maintain reliability.