I only looked at the beginning and the end of the thread, so I have about 171 pp. to-go! You have a good amount of detail and reference material in the posts, I appreciate that. Many times, once I'm exposed to some GJ poster's comments, I'll search the 'net based upon the info gleaned from the post. Yours makes it easy.
Yesterday I was speaking w/a friend from SW MI with whom I used to ride bikes, we both were Yamaha fans, we both had Yamaha 360's, and we rode enduros and hare scrambles. His bike he liked the most to-race was a Rickman-Zundapp, more-than his Yamaha 360 MX. He's well-over 6 fy tasll, and lean, he looked 'big' on that Rickman-Zundapp, but he usually could place on it. I was always a middle of the pack guy.
He was telling me about a collection of bikes in SW MI he knows-of, a former Yamaha dealer's collection, evidently there are a lot of bikes, and many competition bikes, including a lot of vintage two-stroke flat-trackers, for which the estate has been fielding some very-impressive offers. I'm asking him to get me some pics of what's there, he said the guy who's doing work on the bikes is currently working on a BSA B50 MX, and he's been doing work on a 3,000 miles-showing, CBX twin-shock model. Yes, as you'd expect, some very-collectible bikes. He's offered to take me to see the bikes, but I'm not doing any flying right-now.
He's also a competitive shooter and a gunsmith, he bought a couple pallets of drill rifles, Springfield 1903's, from a site in AL, which he's been re-commissioning, he already made-back what he paid for the bulk lot, and then-some.
He has 30 acres in SW MI, and is building a large covered area, 30' x 80' for his equipment, from material salvaged from other sites and is close-to being finished for the basic structure. Of course he has other out-buildings, but this will be the largest. He's a retired Veterinarian.
Another of his current projects is dropping into his F-350 4X4 crew-cab, which has a 6.9L currently, a 7.3L engine he bought up-state. He said that he expects that the swap should last him until he's done needing one (a work-truck) for the farm, as he only puts several thousand miles a year on it.
I have a same-thing, a 1950's two-car in a ranch-style home in Miami FL, we are 'land-limited,' so it's packed-full of things, but it has plenty of 120/240 volts outlets, a half of the floor-space equivalent mezzanine storage area, designed and built strong-enough to support motorcycles, w/an electric boom jib crane to move things.
I'll have-to get to the pages I skipped in this thread, as I'm sure there is great content of-interest in-there, w/good documentation of sources.