On my LS5 when I bought it, knew it was incorrect so I pulled it and replaced with the correct "deep" pump with two vent lines. Took a while to find that one, too -
Carter manufactured fuel pumps right up the road from me in Tennessee (Lafayette, Macon County) -actually was one of my customers. The mold storage in die cast had many AC molds in storage - either they private branded them, or had assumed the molds from Delco. Plant closed years ago - hate it. Never knew what happened to the dies (pressure die cast) - sold or scrapped.
Regards,
Steve