nope. in fact, i need to thank you for pointing that out to me. i hadn't even noticed the articles section of buicks.net. :beers:
considering that most of the articles focus on the nailhead and suspension, i probably just skipped over it before.
i based my guess on the oft repeated reputation of 'durability' that the nailhead has ... and i didn't think that an engine that was dropping cam lobes on a regular basis could be considered 'durable'.