Grub,
You are right, that is exactly what they said they did--grabbed something out of the junkyard that is "supposed to run".
I haven't even tried turning it over to try to start it, much less do compression (or leak-down) test on it and see what I've really got. I would like to get it running just so it could pull itself in and out of the garage. I am still in the evaluation phase to see what I really got.
It has been sitting for several years. Older gentleman who started the swap got heart trouble, couldn't finish, decided to sell.