This EFI fuel surge tank is equipped to contain 2 intank style fuel pumps such as our 643402. For the most demanding fuel systems, this setup utilizes your existing intank fuel pump to supply the cannister with fuel while the two internal pumps supply your fuel system. No more fuel starvation. Comes equipped with 2 -6AN feeds, and 3 -6AN inlets/outlets. (optional inlet/outlet fittings available separately.) Download instructions here DOWNLOAD