So you're suggesting EVERYTHING dealers do when manufacturing vehicles is ALWAYS good? Are you suggesting, for example, that the stock restrictive airbox and intake assembly was the best for the car's performance? And the stock weak nylon timing gear was a great idea, and "they put it there for a reason"? Your logic is flawed...but hey, you're on a forum of TB enthusiasts, asked a question, pretty much everybody told you one thing...and you choose to believe another.
EDIT: I'll add that the community of Turbo Buick gurus and wizards on sites like this probably know
more than even the manufacturers did back in the day, as they've had the benefit of owning and running them--superbly hard, in many cases--over a period of several decades, far beyond the manufacturer would've expected. So, you'd think those gurus would've picked up a thing or two, eh?