AC Compressor part#2:
Instead of guide pins, I used some stud bolts to align the head gaskets, valve plates, and cylinder heads - worked fine too. During the assembly, I coated all surfaces with Ester UV dye. Unfortunately, I forgot to take a picture of two very important parts - the rubber ball and spring, those go in the bore leading to the oil pump. It's imperative to have the spring and ball installed. After attaching the oil sump, the compressor got its final paint coat in semi-gloss black.