I have on my escos, an in tank 023 to feed fuel pot under car 2ltr tank i think via oe filter, then from tank to a Deatswerks 350 pump/check valve to a billet 30micron filter unit, to rail all -6 apart from line to pot to 2nd pump which is -8, from rail turbosmart 1000 reg, from there back to fuel pot, and i have an overflow -4 from pot to oe tank

I run a Autodynamix loom for twin pump setup

2 pumps will be required if your using an oe tank of somesort