Okaaayyy.... 90 views & no takers, eh?
Alright... just in the interest of historical completeness, so as not to just leave this thread dangling out in cyberspace, I ended up getting the frame anyway; you only live once.
The measurements for the headset turned out to be ISO and the BB, Italian. Here's a couple of pics for the archive; I'm building it up with a spare 105 (5500) group I've had in storage, pending a full refurb w/ 10sp. Centaur.
Thanks for the time & see you on the road!