Oh, I donno. Maybe there's somebody in a little-known remote basement library office who could find a letter on Chrysler Canada letterhead that was sent to the current or a previous owner of the vehicle, identifying it by VIN and stating it has the 170 cubic inch (2788-cc) engine. I'm sure whoever wrote that letter is probably retired from Chrysler Canada by now, and there's probably nobody left who remembers his or her name. But the letter itself was probably written and it probably survives somewhere.
Stranger things have happened.
No, and if I were a motor vehicle registration authority agent and someone offered pictures like that as "proof" of what kind of engine was in the car, I'd laugh. Photos of block casting number together with references listing that number and stating its displacement, on the other handÂ…!