You may wish to join a Buick club...I like mine, the BFG: Buick Performance Group.

It costs 35 bucks a year, you get a newsletter, and in that newsletter are typically ads from guys who repop things and aren't "big Guys" in the industry. It also gets you discounts with certain Buick vendors. I saved almost 800 bucks off of a ~3000 dollar purchase with one of these vendors just because I'm in the BFG, and they were having a BFG member-only sale.

On the club website (which you don't need to be a member of the BFG to use and participate in) there's a 'parts wanted' and parts for sale' section as well as technical forums, it's much like CHR...but these are about 99.999% Buick guys. You may as well fish were the fish are Doesn't mean you can't fish here, too

www.v8buick.com