Not much for a Buick. 350 header gaskets and 455 MLS head gaskets. Everything else is generic and so-so pricing.
Well we all know not many vendors have Buick specific parts. LOL That’s what makes us different from the rest.
Oddly enough, the AMC motors look a lot like a Buick motor. A cross between a nailhead and a 455. I'm not even talking about the actual Buick motors that went into Jeeps either.