Fuel feed line opinions needed

Likely not. The heater hoses are likely colder than the block. The exhaust is one big thing that causes fuel boil

Best thing I did for the 67 before I went EFI is a carb spacer/ insulator, block the intake crossovers, build a return setup (Use a Wix 33040 / 41 series filter with a built in orifice) and rear mount electric pump

Do NOT use the carbon canister (evap vent system) tube for a return tube. On the 76/ earlier cars that is the tank vent. Don't know about the Aspens

Already tried a spacer with decent results, just received the .333" insulator/gasket from edelbrock to try out.

I'm considering a return line, but would like to avoid the electric fuel pump if possible. If that is the final piece so be it, but I think ill try everything else first.

Carbon canister is long gone and the line kinked by the PO. I almost considered a cool can, but how often would I be putting ice into it? What about insulating the metal lines?

KISS is the name of the game here, hence not wanting the electric fuel pump. I bought the wagon for 1k so I'm trying to not sink too much $$ into it.