I've got a shop here in SF (south florida) that will "rebuild" a M or MW pump with what ever elements you supply and make it idle smoothly and put out the power the elements give via increased fuel output. Cost is about a grand, plus the parts you supply. I said this over at STD and got few interested parties- GSXR IIRC said it was overpriced. I already have a Myna pump on my car with a undersized (stock) turbo- so I don't need the service right now, but I've dealt with them in the past in search of greater power- plus SF is the home of monster diesels in yachts and sportfish boats- so they know IP and power.