Small block crankshaft endplay

No one alive who is a man cares if the date stamps are the same. The only people who care about date stamps are 'Ellen' watchers and Corvette owners

I'd pull the pan and look around before making any decision....but I'd plan on using a different engine, most likely.
Lol, I have never seen anything with Ellen, so I guess popping the oil pan and taking a look with the expectation of using a different engine is probably going to be the way to go. My son is heavily looking at the 360 we have sitting on an engine stand with a 727 transmission next to it. If we're going to replace the engine, may as well swap the 904 out for a 727 since we can. Would still regasket, bearings, cam swap the 360.