I have just bought a S14 SR motor and found it is missing the A/C system: compressor, bracket, and another pulley that I don't know what does it called. It is basically the smaller one that sits in between the compressor and crank pulley.

Sorry to grab someone's engine bay picture. Here it is the little one to the right of the crank pulley.
I wonder if my KA would have the same pulley that I'm missing on my SR?