Horse power wise you won't lose much. sound wise you notice a big difference. i have a good friend that works inside sales for Gibson. he wanted to give me that same set up. i had to refuse because i would have to rename my boat and that is bad luck. " Feel The Noise 2 " i used to own " Feel The Noise " former circle track v-drive racer at Marine Stadium Long Beach but it was stolen a few years ago. But that Gibson set up is very good.