Well, It is a 71 stage 1, and it does have AC. https://chicago.craigslist.org/wcl/cto/d/1971-buick-gs-stage-1/6604261500.html
I have one here in Cleveland but it sold new from Ray Folger Buick in Charlotte. I have owned it since 1984. Has air but I never hooked it back up since engine rebuild in 2002. It's an un restored original Stage 1 car in stock appearing condition except for engine HP upgrades and suspension upgrades.
Also, the dealer in Charlotte was Lee Folger Buick not Ray Folger. I believe its called Williams Buick GMC now
You can't beat a Lime Mist H/T For 1971 is it still numbers matching , bench or bucket seat ? Ray you need to take a look at this STAGE 1 !
Block is 1971 but does not match VIN. Stage 1 heads have the correct cast month code on them so they are original. Transmission and rear end are original. Green interior so no bucket seats. It has the custom seats with the front arm rest. No rips or excessive wear, no sun fade or distortion. All the weather stripping is in good shape. Rally steering wheel, front disc brakes, AM/FM radio, 98,000 original miles.