Well, that's a heck of a lot of work, but nothings wrong with that.
There are much better candidates out there for donor engines. The cosmetic shape of this one disqualifies it. For one thing you've got the pathetically replaced ugly solid brown cloth headliner that hangs down in the back and was cut to close enough spec. The dash is cracked, the wood is a joke, rust bubbles under the paint in various places. I wish I had a digi-cam.
This thing really is a beast. It definitely has the warrior spirit though.
I'm sure between the factory manuals and this forum, there's a lot I could do to keep it going.
I'll let you know the compression/leak specs when they come out.
Late,
Josh

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63 220S W111
76 300D W115
2013 VW JSW TDI M6

previously-
73 280 SEL 4.5
86 300E 5 speed
2010 VW Jetta TDI M6