OK, I know that A/C isn't a big part of Rennsport's business, if any at all. This question is better suited to Pelican, but A/C threads there are a pain in that they all rapidly become arguments - wwest vs. Griff and his supporters.
Anyway, I need to replace the rear deck condenser in my '84 coupe. I don't need any super fancy high-capacity serpentine unit for here in Eugene, stock type will do. So I have two choices at about the same cost - used factory original (from a known vendor of good reputation) or brand new aftermarket. The aftermarket unit is described as custom fit (no mods to require, fits like stock) and has a 1 year warranty. The used will fit properly (it is factory, after all), carries a 30 day warranty, but it is 25+ years old. I'm torn, which should I choose?