Thanks - although I'm still not clear from a couple of his points if its 501, 501sl, or 531 tubing. Point #3 was an example - seems like there he's saying its Reynolds 531 tubing. The bike in question is super clean though. Remarkably clean for a bike of that vintage actually. Looks like someone bought it and rode it a couple of times when Lemond was doing his thing, then stored it in a garage somewhere.

There's also that old Moto at the pawn shop near me with 531 tubing and Nuevo Record. Might be able to score it for about $200 but it needs a little work. Wheels need to be trued, needs new cabling of course, and new tires at the very least (which are tubbies and are going to be expensive). Thats all typical of course. Just wonder because of that how much else would need tweaking. Oh well, I guess that's why they call them "projects" right?