How about the " boost a pump" from Kenne Bell ?

http://www.kennebell.net/accessories...boostapump.htm

 

You should look at a weldon 2025 pump, regulator and dial-a-flow box. It's a little on the expensive side, but its quality is not matched by the in tank deals. I didn't have any luck with my 340 lph from racetronix, so rather than chase ghosts and continue to waste $$$ on junk I just made the leap. I am very happy with it. To me it's kinda like investing in the 12 bolt Vs. rebuild (countless) 10 bolts.