@WNGD -
This is not the first or second time you've brought this point up, and I wonder what you're driving at.
Have you ever seen the process the respected builders use to build a turnkey? It's not the same as a homebuilt. Greg, etc. are not buying old VWs and steam-cleaning the chassis, engine, and transaxle, then dropping a body on top.
There used to be a shot of the old VS where Kirk had probably 100 "pans", which were really just central tunnels, frame horns, and the front Napoleon's hat standing up, leaning one on the next. I'd bet there wasn't 100 lbs of "original" left in what he started with. There weren't even pan-halves left. Greg does the same thing.
Beck doesn't even start with a tunnel (and VIN). Their frames are 100% fabricated, in house, by the elves in Bremen.
Either way, every car gets a new beam, new torsion bars, new shocks, new steering components, new hubs, new brakes, new transaxle, and a new engine - new everything. The car is entirely new. Receipts are available upon request.
I'm really not sure what the relevance of the total mileage of the "donor" car before it was stripped to its central spine, but perhaps I'm missing something.