I know this isn't specific 3rdgen related but, it is somewhat.
I'm in the midst of putting a 88TPI on my friends 72 chevy truck and I've hit a small barrier.

I need to know either the name of the flange so I can do a net search to figure it out or, if there is a tool to make it, in the style of the high pressure fuel line fittings on FI cars. Due to budget, a custom sending unit can't be made for the gas tank and I'm not comfortable with double clamping the line when the gas tank is inside the cab.

Any help/info would be much appreciated since this is the next item to be addressed on the truck.

Here is a crude drawing of the flare I'm talking about...

 

Quick coupler??? Guess I'm not sure I understand your question..

 

Where, exactly, is this line located. I guess I missed some of the content of the message too.

 

Sorry guys, I was a little vague when I typed that last night

What I need is to make the flare/flange style that is put on the fuel lines.

Like the ones here....