Thanks for all the replies and leads!
Guys -- Firstly, Thank you very much for the leads, I will check them all out! I've actually been tracking the Cordoba listed on Autotrader, and I'm sorry to say, the car is long gone, but the advertisement remains. The red/black 440 LS looks like a darling, and with all the resto-work, and certainly the engine, the price appears appropriate. I have concerns about importing such a vehicle, I suspect it to be quite a challenge. I may give the seller a call to see if he has any insight. (I sold my '75 to a Canadian fellow with no issues what-so-ever.
http://www.functionbox.org/doba.htm)
Re Furyfrank: Thanks for checking!
Re Location: Currently in CA, but relocating back to the Midwest at the end of the month. (Location doesn't matter, I'll travel for the right car!)
Re Budget: If an LS in showroom condition presented itself, I would consider parting with $10,000. That would mean a car with working R12 AC, flawless buckets, a center console, un-rashed 5-Spoke wheels, a V8 that idles like butter, near-perfect plastics, and the faux-brushed dash bits would have to be in good shape. (I expect the trim atop the doors is broken, even on this near-perfect example.) I'm not sure the car I'm dreaming about exists, so I'll spend $2,500 to $7,500 -- but still looking for just a super example. Remember, it was dummy-me that sold this:
http://www.functionbox.org/81Doba.htm (This is my quality-target)
And finally, I stumbled across this and am really thinking about it / talking to the owner:
http://desmoines.craigslist.org/cto/4527424827.html