440 A/C parts

I am building a 78 440 for my Tru......ER I mean A-body ( :) )
I want A/C and I do not like aftermarket components so much being seen under the hood, Id like to find everything needed to make this work from one source.
I need everything as far as bracketry, Ill buy a new compressor. My truck has P.S if that makes a difference, maybe I need to change that bracket to make all this work?