i just ordered the 023 pump i see alot of guys using or talking about the 040 and the 044 pumps.it looks like the 023 outdoes the 040 pump but not the 044.why doesnt anybody run the 023 pump?i should get it in this weekend and ill try to get pics of the install.im scared of the walbro because it cost me a set of heads on my truck by going out as i was spraying lol.i just went with the 023 because the 040 is hard to find at a descent price and i bought the last 023 from jay racing today.the 044 pulls alot more amps than the 040 and 023 .here is a link to the pumps .i think any of these are a really good alternate to the walbro.
http://www.boschfuelpumps.com/specs.html