is A/C stuff worth selling?

The hoses and brackets and lines are different for slant-6 vs. V8. The factory system is far superior in several critical respects compared to the setup Vintage Air offers for the A-bodies. And it shouldn't be too hard to scare up a York bracketry setup for a slant-6 (even easier to scare up a bracketry setup for a Chrysler V2 compressor, but I'm guessing you object to the weight). The common aftermarket Sanden/Seltec compressor mount is poorly thought out, but Charrlie_S makes a very good one. Not a very good choice for use as an air compressor, tho; it relies on the refrigerant to carry the oil. The York and the V2 have oil sumps and pumps.