47-55.1 Running fuel lines

[Matt_50]

I want to order fuel line stuff on this next paycheck and need some advice.

1950 3100, original frame.

350 carbed engine with mechanical pump. Stock engine for a daily driver.

66 mustang tank and sending unit mounted behind axle.


Let me know if I have this right. Pump has 3 ports. One to carb, one from tank and one as a return to tank (engine out of an 84 c10). Sending unit on mustang tank has only one port. So no return to tank.


Do I change the pump or the sending unit?
What size and type of lines should I use?
What kind of flare should I use so I can have rubber lines to connect them all?
Vented gas cap?