How to test fuel pump? How to attach pressure gauge?

Lasalle said
Stock 1973 Dart 318 V8. The 1973 shop manual shows how to use a pressure gauge to test outlet pressure on the fuel pump. The book says to install a tee just before the carburetor to connect the pressure gauge. I don't think the tee fitting exists. Numerous auto parts stores do not have the fitting. IS there another way to test a fuel pump?

Fuel pumps are not that expensive. It seems way easier to just change the pump. That is wasteful to me.

You will need a chunk of fuel hose, a "T" Plastic or brass and some clamps. You can disconnect at the carb or the carb side of the fuel filter. Hust make sure the hoses fit on the T and the clamps are tight. No need to start a fire. Your gauge will need a barbed fitting on the end. Most of the fuel pressure gauges now days are for Schrader type fittings (because of fuel injection pressures)