Thanks to everyone for all of your insight. I think this is just what I needed.
By way of background, this is a backyard shop, but it's sophisticated and employs several people all of whom are professionals with plenty of credibility. As I mentioned before, that type of thing is hard to find in Vancouver. I imagine that southern cal, for example, has good custom shops on every street corner. Here, it's dent repair and insurance claims and get-it-the-hell-out-of-here as quick as you can. These guys have an impressive portfolio of show cars.
At the end of the day I'm going to have 15,000 in paint and body on this thing. That will include a whole lot of cutting and welding (to get rid of the beginnings of rust) some professional straightening, undercoating, primer, epoxy, etc, and a piano-finish paint job in the same red that you saw above. They're working around a lot of previous hack jobs and are warrantying their work (won't fade or pimple or whatever).
Yes, it's a lot of bread. It's also a lot of work on a big automobile. Most importantly, for the first time in my life: I can afford it.
If I sunk 30K into a new mustang tomorrow, I'd be lucky to get back 10k in 3 years when it's no longer cool, because that's 3 years ago's mustang. In any case, 754 is right: it's not about the money. It's about having a DOPE RIDE.
Points about driveability of a showroom-type job are well taken, though.
Many thanks to everyone who chimed in. I'll put up some pics when I get 'em.