Well, I got the radiator back from testing yesterday... and it failed.  The core is basically shot - three bad leaks and it's plugged up with old deposits even after cleaning.  The shop offered to repair the leaks, but there's really no point with all of the deposits because the radiator won't be very efficient anyway.  Sad news.  Anybody got a spare radiator for an R-Series?

Things still aren't progressing with the engine either - still no movement.  I guess it still needs to soak for a while yet, but I was hoping to at least see a LITTLE movement by now...

I've also removed the starter and generator - I found a vendor on eBay that sells rebuilt units and I sent them some photos.  We'll see what they come up with for a match (IF they come up with a match).

These are the setbacks on an old vehicle. :-(