I think it's wrong but I'm not an expert, time for you to join the V8Buick board. Good information there but you'll quickly realize the Buick guys are maybe even more passionate then us Mopar weirdos but it's even harder to get parts and information for a Buick.
As you seem to know already The Parts Place is a great place for Buick parts.
I wish you the Best of Luck with that kickass ride!!!!
Ron