Is its possible to install an exterior high performance fuel pump for the inline 4.0 six cylinder engines,instead of internal ? does anyone know the fuel pressure rating is for the inline 6 cyl eng, also will the regulation be a problem if I connect the exterior pump up to the interior pumps harness? and take out the interior pump and runn hose through to the sock/filter leaving only the sending unit in tank. thanks for any replys p.s: if this would work does anyone have a clue to where I could locate and exterior pump