Combed thru the forum, could not find much discussion on fuel line SIZE. Planning to be in the neighborhood of 550 HP on a T/A STG 2 SE 455. Have a Holley 1000 cfm carb on the shelf, considering using the McRobb mech fuel pump... but everything is open to the future engine builder's recommendation. I have to make my own fuel sender : http://www.v8buick.com/index.php?threads/diy-fuel-sender.332183/ ...what size line should I be incorporating in this home-made sender? The tank hole is small (the sender bolts in rather than the later lock ring) - maybe 2-in, so getting a fat pickup tube, a possible return line, plus the feed for the float in thru this space... doesn't leave a ton of room. I'd like to get the correct-sized 90-degree fitting I can thread into the new 'sender plate' that screws to the tank, so I can drill/thread that hole... or should I put that on the back burner for now?