Because I chose blasting (not dipping or envirostrip), and because I asked them not to go crazy trying to blast away stuff that didn't want to shift, there were a few detail areas still having old underseal and sound deadening in place. For example in the engine bay, footwells and up behind the torque tube:

Those areas were stripped by hand. Barry's hand, not my hand. I had intended to do it myself but, strangely, never quite got around to it. Equally strangely I don't regret handing it over to a rather overqualified operator of the drill with wire brush attachment.

I know some people have used dry ice to get the sound deadening off - make it very brittle then hit it with a hammer. Like the banana in liquid nitrogen + hammer in the Big Bang Theory ("I couldn't find a knife"). I should have done that, it would have been fun. Will try to do some dry ice blasting in due course. BTW it really is true that you can buy dry ice in supermarkets in the US.

Anyway it all looked much nicer afterwards: