Take the crank to a machine shop and have it inspected, most likely all it will need is polished if it doesn't have gouges on the journals. They have many bearing sizes available so be sure you use plastigage when assembling the crank, no oil during the plastigage setup stage. You can often get your machinist to pick up the bearings for you after they machine the crank. The good thing is that the rod bearings are the good old tried and true SBC bearings though I'd pay extra for a coated set. I've got to where I like the King crankshaft bearings, good quality and decent pricing though they ones I bought aren't coated.