Help with A/C Compressor I.D.

I think I posted this in the wrong section so I'll post it here:
Received a stash of parts back when I was putting my Riviera back together. Everything was supposed to be from a 72 GS. I have an A/C Compressor with the green & black label and has Model # 1131002 on it. It has the larger diameter clutch & pulley for high RPM. My research shows Corvette but it also has a piece of bracketry on the rear for a Buick application. Did the 72 GS with a 350 use this compressor?

 

Thats Not For A 72 A -body.does It Have A Plug For A Single Lead In The Back?post Some Pictures If You Can.72 Part Numbers For A -body Are 5910789 Standard Compress. And 5910790 Gs With 3.42 Axle Ratio.....hope That Helps

 

Yes it has the single pole switch on the back. I'll get a few pictures and post.

 

That Single Pole In The Back Started In 72 And Later Cars,doesnt Seem Like Its A Buick Compressor,maybye Someone Switched The Brackets To Fit A Buick.