HAHAHA! I told I'd give him $50 for the hat just for wall art...He was pissed, but I got it anyway!
Interesting...based on the pic, I would have guessed that it was a GM R4 compressor; it looks very much like the R4 compressors that many '81-'85 Mercedes diesels used. Doubly interesting in that the only other truck I've seen with dealer air (either an '83 or '84) had a York compressor...I wonder why they changed that?That is the AC compressor that was offered with the dealer installed AC kit... which at the time was all you could get with an XL truck. Nearly irreplaceable.