Small block crankshaft endplay

Dang, this's not sounding promising. Lol. I guess the question comes down to: pull it out, disassemble it and take the block, crank and rods in to a machine shop with the expectation that its probably shot. Pull the engine, grab the 318 that we pulled out of a 71 dart that's got the exact same month and year date stamps from the factory and rebuild it to use. As we have an exact same year and month spare engine. Or put the '72 360 engine in it, great shape very low mileage engine. Or buy a crate engine, install and enjoy the reliability with a warranty.