Troy, Check out Rides on this site, there's at least one Buick listed. There have been a few Buick 8 articles in the Club NL as well. Also, over the years I've seen many dual+ carb intakes for Buick '8's at swap meets. I'd search ebay and place some 'wanted' ads around.
Best of luck

Jim, I.I. #173
(It's easier to get forgiveness than permission!)