The original owner was an Air Force member at Blytheville AFB... Coincidentally, I'm retired Air Force...
Join over at http://teambuick.com/ The 72 Chassis manual is online there, https://www.teambuick.com/reference/library/72_chassis/index.php This is a steal, https://www.ebay.com/itm/1972-Buick...142718?hash=item446c9f1b7e:g:I0wAAOSwEvJfzW19
I'd like to say welcome from WA but I'm in the UK. However, I did spend most of 2018 between Auburn and Kent moving two aerospace factories into one. Nice car BTW
I bit of research indicates the Norwood plant did start fastening cowl tags with screws, but in mid/late 1973.
Thank you! Hope you enjoyed your time in the Puget Sound area. I live on the other side of the hills, the SE corner... high desert and brown. I did attend a funeral in Rye, East Sussex a few years ago... Speckled Hen Beer!!!
Old Speckled Hen, a worthy brew. Maybe next time you're over you can try anything from the Wychwood brewery https://www.wychwood.co.uk/beers/ Their slogan used to be "Whats up lager boy, frightened you might taste something!" And yes, the Puget Sound area is stunning. Wish I could get back for a visit as a friend of mine (a fellow Brit) lives in Issaquah.