Aahhh yes... ok.
It saddens me to say that, barring some miracle... I'll never have a real Gibson Thunderbird. To the best of my knowledge... Gibson proper, never produced one that didn't have a shallow 1.5 inch nut width. From what I've been able to gather thus far... custom shop, Hamer (unicorn), and Greco, are the only shots I'll have at a "real" neck-thru 'bird.
<edit>
When I typed the previous statement... I didn't consider short scaled 'birds or TB 5s. When I'm finally able to perform a 5/4 conversion on an Epi, I may find that it's a good thing, and could be coaxed to try it out on a Gibby. Does anybody know anything about the neck profile on a short scaled 'bird?