Seattle Craigslist.... Bucket seat car. Looks like more than 3k parted out even to me. https://seattle.craigslist.org/sno/cto/d/lake-stevens-1966-buick-riviera-gs-465/7152571270.html
If it was local to me it would be, I've always liked this series of Rivieras. However, in this day of Covid and closed borders, importing anything from the US is next to impossible, might as well import something from Mars, it'd be easier.
'66 is probably my favorite year Riv. but I prob. wouldn't turn down the right '67. Maybe a '68-9 or '72. If $ were no object I'd just make @JZRIV an offer on his but it really is too nice/rare to drive. I had a '66 with almost every available option like his exc. the dual quads. His is the absolute pinnacle in Rivs IMHO.