NYNick

Confuses me as well, the pump that was installed by Bill Williams had the single output pipe, mine as you can see has both out and return pipe. My motivation in doing all of this (my tii tank is sound and my pump works great) but over the 40 years of ownership the tank was abused and dented, got a nice later 2002 tank that was straight and sound and has the single hole for my new pump and required sender. So pump power, I can "Jerry rig", the sender is a bit more complex, just need a wrecking yard with some DOA E30's.