I saw many turbo Buicks at Campbell when stationed there. A good friend of mine (a Major), had a real nice lightly modded 87 GN that got him in a lil trouble back in the day......
I think I know who you saw. Tbone from the SyTy board. Retired Sgt Major from 101st Abn, still lives in Clarkesville. Owns several SyTys and other toys.