The Quantum uses a horrid boat-anchor York compressor (one large piston). It will sap what little power you have, but it will never die. You'll need the correct cast-iron bracket to mount it (even more weight!).
The Dasher used the Sanden rotary compressor. Lighter, but not as durable as the York. You'll need the welded/stamped steel bracket from the Dasher to mount it.
You can run either setup on any 1.6-2.0 motor from 1976-1993: gas or diesel
Or, you could fab your own auxilary brackets for the Quantum AC bracket, and then run a Sanden compressor.