AC compressor locked up. Suggestions on replacement parts?
 

Hey guys! My A/C compressor just locked up in my NA 1986 GLL Z31. Clutch was cooked by the time I could get off the interstate and pull over and figure out what was happening. I’m wondering if anyone has any suggestions on where I should get a replacement part. I’m having a hard time finding a new replacement, and I’m looking at a few remanned ones on eBay. Does anyone know if the attached eBay links are reputable? I also found one listed on a website for $24, LOL!! Thinking either a total scam or a price error. I’ll link that one too incase anyone has experience with the website or the specific compressor.

Also, wondering if it would be a good idea to just go ahead and do a r134a conversion. If so any suggestions on conversion fittings?

Thanks!!
Ebay compressor #1
Ebay compressor #2
Too good to be true priced compressor