Does it only happen when the gas is below a half or quarter tank? You might be another victim of the dirsty sock/screen in your fuel pump.
The ones I removed recently -
How to replace-
http://www.contour.org/mods/mods.php?s=howto&displayid=39Oh, and BAT carries the sending unit, which is the functional part of the fuel pump assembly. $80 instead of hundreds for a new fuel pump.