Ok, first of all, I will start off by saying i know NOTHING about AC. I have a 69 SS396 factory air car that looks to have everything intact for the most part, but doesnt work. I'd really like to get it in working order if its at all possible without spending a total fortune. I believe the MAIN reason it doenst work is a crack in a stainless steel (or aluminum?) pipe that comes out of the very bottom front of the box on the firewall.. .this pipe make a 90 degree turn out of the box and leads upward to what looks like a valve or something,what is this pipe, and whats it connected to inside the box on the firewall? i think if i could replace this piece and recharge it, it could work, cause everyhting else seems to be there... i know this is vague, but can someone explain what this pipe is, and would an air conditioning shop/garage be able to make this stuff work? Has anyone tried to get an old AC system working before? any luck?