John,
Here is a good thread on this subject with lots of links:
”Weber fuel recirculation- Questions“
Your T should have the return line in the chassis and used to return the relief from the rear mounted pump back to the tank. All it takes is to plumb the best circuit. It is very desirable to locate the pump in front (as with ‘70T) and insulate the hoses in the transmission and engine area.
You will notice in the above thread that we (Pelicans collectively) came up with the best circuit that passes cool fuel past the carb inlets and has a pressure regulating return to the tank.
Your ’71T should already have the phenolic insulating spacers between the heads and intake manifold.
Best,
Grady