putting in a factory a/c unit

[putnam00]

I have a 71 c-10 non a/c truck but I want to put a/c in. I have my hands on 2 maybe 3 factory a/c units. I'm not running the factory engine, its an LT1, so I'll have to make a bracket for the compressor I have a top mount blazer ac compressor. what other things do I need to get this going I'd like to have it in before my Tour Nebraska the first part of june. I know I could go buy a aftermarket a/c and come with all the stuff, I just don't have $1400 bucks for a kit like that even though there cool as hell