Got an email back from them: "I apologize sir but that one is way over 10 years and we don’t have access to those records, plus we don’t know if it was an IP or CAP unit."
So....now I'm at an end. I think I will advertise this on the swap meet and let someone make me an offer. I'm moving so it has to go (and while I would love AC in my '55 series 2, there are a ton of other things that I need to spend money on.)