Gas tank and sending unit question
I took the old tank off my 78 Camaro and the sending unit has one line. The car originally had a 305 and did have A/C. A 350 was put in and the A/C was at some point connected.
The new tank has a vapor line that is cut at the back. The recommended sending unit for a 78 (350) with A/C is a two line unit. That gives me three lines coming off the tank and only two lines from the engine.
So, do I cap the line at the back since the sending unit has a return?
Do I use a single line sending unit and bring a tube from the cut off to the front for the second line from the front of the car?
Do I need to use both the sending unit lines then need a third (and where would it go) line?
Lastly - Is there a manual that would help me find the answer?
Thanks in advance