In conducting my own research for a better fuel pump I have been reading about how people have been exploring alternatives. It has been mentioned in several other threads that Mikuni produces several compact vaccum powered fuel pumps that could be a possible replacement. After researching this issue, I don't believe that any of them will work. Their flow rates are too low and presumably the pressure will be too low as well. (0.06 gallons/minute for the most promising unit) The NAPA and Facet units are still the best so far, but who knows there may be others out there. I still looking around and will post more as I find more solid information.