[Franco in Pa]

I have a 42 year old craftsman 1 hp compressor. It shuts off at 80 psi and has a small pinhole in the bottom of the tank. I want to replace the tank with a portable compressed air tank from harbor freight. The harbor frt tank only has 1 pipe fitting on it. I want to add other fittings to the tank for inlet/outlet and drain but I only have the capability to braze them on this tank. My question is would the brazing be strong enough? Like I said the compressor shuts off at 80 psi. I realize that this may be a jury rigged way of fixing it...comments welcome. Franco in PA