Good news is O'Reilly's had compressors on sale for $134.99 which was a pleasant surprise and far lower than I had expected (and lower than RockAuto, even).
Bad news is the bolt holding the A/C lines to the compressor is too short. I ended up using a bolt from one of the front braces and it, too was too short - although long enough to mount the lines, far too short to make a seal. Talk about a waste of $12 of R-134.
I think my can of PB Blaster is reaching the end of the line.