fuel question

[hilljob26]

i am trying to run the fuel pump out of my 2001 yukon donor vehicle for my swap into my 69 blazer, now, the intake has the place on it where a line ran back to a canister on the side of the fuel tank,,first off, what is this line,second, do i need it,,3rd,,do i need the canisters off of the stock yukon tank for this application. im trying to use as much wiring from the yukon as possible, plus the gauges, thats why im trying to use the stock pump just to simplify everything(or not...lol)also,, is there a ring i can get somewhere that will let me use this pump in another gas tank,,or will i just need to make something