Thanks every one for all the responses and suggestions. Not changing the system, is what I have been leaning towards. I am a very strong believer of keeping it original and have not made any changes for the past 2 years that we have owned her.
The one intriguing suggestion was the potable honda pump. Honda makes a GX25 4-stroke with a 25CC engine that weighs 14 pounds and pumps 2200 GPH.
