Nope, I have a nice neat pile of parts to fit the T-36 and the motor you unsealed is the one I'll use, got all the links, swivels, and stuff ready. At the minute the cab is off and I'm cleaning up both track frames prior to painting and refitting the driver compartment.
Once that is done, the plan is to blast the cab frame, paint, and re-mount it, and then I can go wild with all the new bits, including the motor. I have plenty of images and dimensions to make the missing dash panel now, and most of the hardware. When the cab is together, roofed and glazed, I'm going to look at the engine, plumbing, and wiring, and when it is all there and running then I'll start to think about the tracks, and not before, since It isn't like I'm going to get any real use out of it. I reckon by my 110th birthday I should be able to drive the T-36 out of the garage, but by that time global warming will mean that I'll have no snow to put it on.
One of the other three T-36 survivors is now rebuilt and driving, but apparently it is really heavy and a pig to drive - who would have guessed :-D