Help Needed to Reduce Installed Generator Noise

I don't know how large a inverter generator you can buy,but there are several 3kw inverters on the market, some even have electric start. Why not look into replacing the Onan with, say a Champion with electric start? If the size is compareable it would seem to be a win - win. Quieter, less vibration and can be rigged to use the coach's fuel tank. Then everybody would wonder how you got it to be so quiet.