That is an amazing find Sir, if I'd have spotted that on eBay we may have had a fight on our hands. One of my all-time most wanted bicycles.
Was going to say, there's no way I'd let Thompson gear anywhere near that bike - looks like you have matching Nitto finishing kit which is quite in-keeping with it. I'd keep the stem, lose that headset preloading thing and shorten the steerer, but it looks like you're already ahead of me.