Sorry, I bought a new OEM one (for different reason, though).
I would try with a mirror - maybe you can see if there's any way to reconnect it? I know it is tight..... I presume it could also be possible to remove the compressor and make enough space for this w/o disconnecting the hoses - this way you might be able to do w/o evecuating and recharging the system.
Please see attached a photo of my old compressor. Do not try to open the screw - it won't. It's probably an adjustment of some kind. Haven't taken it apart yet, but I was planning to. I want to find out what's wrong with it
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Tapani
PS An R134a compressor for a 1996 is $200 cheaper than an R12 one for a 1992.