Pic #1: That's the mounting for the air conditioning idler pulley. I don't see fan shrouds on your engine, so I'm guessing your's came without A/C from the factory.

Pic #2: Vacuum port. That's capped off on my carb (came capped off from the remanufacturer and was capped on my previous carb). I am curious about the short line passing immediately underneath that port, connecting those two nearby ports. On mine, the port on the picture's right runs up to the firewall and the one on the picture's left is capped off (also came capped off from the remanufacturer and was capped on my previous carb).

Pic #3: Don't recognize it. I have a different configuration in that area on my '88.

Hope this helps.