The 82 had Buick on the rear quarters but it's a fad in type lettering. which is the problem. Kinda hard to do unless it's a printed sticker and most these days are cut multi-piece so it would be a pain to put on to say the least.
I FINALLY found this in my files (not digital you know the paper type?). Its hell to get old - Anyway if somebody is looking in the future this is it. I guess it was called "Buick merchandising."