Drain89,
Glad you asked about the crank pulley. I just realized I don't know where mine is. The crank takes a seperate pulley that bolts to the outside of the hamonic balancer. When I do locate mine I'll post a picture of it. Here's the casting numbers for the cast iron A/C mounts that bolt to the head. The casting numbers are for a 61 - 64 Pontiac and are 541198 - stamped into the lower bracket that mounts to the head and 542683 cast into the upper bracket that pivots.
Franks Pontiac does have the big front mount for the compressor - he's asking $75.00 for it - 6th photo bar down far right and better photos of the A/C brackets that bolt to the head 12th bar down & far right
Link
https://frankspontiacparts.com/engin...ineacparts.htm