I went ahead and bought an ep381 from AutoZone today. I was going to get a acdelco but ended up with a delphi. The only reason is because the acdelco was ~$95 and the Delphi was ~$65 the acdelco had a 1 year warranty and the Delphi has a lifetime. And I know my luck with fuel pumps. Especially in the '82 non baffled tank.
And the store manager gave me a "courtesy discount" of 10% that I didn't realize until my gf mentioned it as we were leaving. I guess he realizes how much money I spend there. Anyway. If anyone wants to chime in on the above fuel pump or add any info about ls swap pumps for future reference go right ahead. I'd love to find out some details and hear everyone's experience with them. Thanks.