what is this component in engine bay?

You might want AC in AZ. Search for the long post on compressor options for a slant six. If you run across a 1977-78 Volare/Aspen slant in the nice junkyards of AZ, see if it has a Sanden compressor. If so, grab those rare brackets.

thanks. I dont plan to put it back into the car at this time with my current build plans. I have a daily driver for some comfort. heat is bad out here between June - October