Great write up.
I'm rebuilding a 4.3l to put in the jeep and it is setup with a R4 compressor. I know nothing about this compressor. Tried googleing it for on-board air use but came up with nothing. Has anyone used this compressor for on-board air? Will it work? Will the bearings go on account of no lubrication? Since I already have the compressor and I have no other use for it in the jeep just wondering if it will work for this setup.