So after reading about the York compressor install (here and here, as well as someone on this board, but I can't remember who!), I decided to go for it. I went over to Sunland, CA today and visited 5 junkyards looking for an AC compressor out of an 80's Volvo. Most guys had no cars that old or the shop was closed on Saturdays. Finally, I remembered a local U-Pick place had loads of Volvos, and I had my tools in my truck, so I figured I would give it a shot. About an hour later and $22 out-of-pocket, I now have a York compressor to do my onboard air project, which I will document here.
UPDATE: since my plan changed lots throughout this thread and the project is long done, I figured I'd update here with what I ended up doing:
I went with the Slee bracket (including new water pump pulley with triple grooves) and a 5-gallon tank mounted above the spare. I used braided stainless steel line from the compressor output to the manifold (through a coalescing filter) in the engine bay, which has the pressure switch/relay unit and quick-disconnect mounted up there. From the manifold a line runs to the rear tank, which has the pressure release (safety) valve and a tank drain via cable-pull. Since I have no spare tire mounted there, I ran the cable pull through a slit in the bumper that allows me to lock the tank open to drain after using.
Compressor with Kilby connectors attached:
Tank (you can still fit the tire up here as well):
Compressor Mounted:
Hose setup:
Valve allows you to see tank pressure as it builds as well as check pressure on the tire as you fill it:
Here's the manifold in the engine bay (from left to right): pressure switch/relay, quick disconnect, output to tank, input from compressor (through coalescing filter). This was actually pretty easy to install by removing the windshield wiper cowl (to get access to put nuts on the bolts).
Drain valve activator:
UPDATE: since my plan changed lots throughout this thread and the project is long done, I figured I'd update here with what I ended up doing:
I went with the Slee bracket (including new water pump pulley with triple grooves) and a 5-gallon tank mounted above the spare. I used braided stainless steel line from the compressor output to the manifold (through a coalescing filter) in the engine bay, which has the pressure switch/relay unit and quick-disconnect mounted up there. From the manifold a line runs to the rear tank, which has the pressure release (safety) valve and a tank drain via cable-pull. Since I have no spare tire mounted there, I ran the cable pull through a slit in the bumper that allows me to lock the tank open to drain after using.
Compressor with Kilby connectors attached:
Tank (you can still fit the tire up here as well):
Compressor Mounted:
Hose setup:
Valve allows you to see tank pressure as it builds as well as check pressure on the tire as you fill it:
Here's the manifold in the engine bay (from left to right): pressure switch/relay, quick disconnect, output to tank, input from compressor (through coalescing filter). This was actually pretty easy to install by removing the windshield wiper cowl (to get access to put nuts on the bolts).
Drain valve activator:
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Still on the original HG too (knock on wood 
