D-342 (D- crankshaft. Forging #4M447 Fits 36A4649-46A12885 an below. Main journals -.025/rod journals -.050 no deep ridging, believe it would polish and give satisfactory service.
D-330A 56B1819. Running take-out marine gen set. Basic engine shares many parts common to tractors, loaders, etc.
D-343 cylinder block (spacer-plate type) Casting #7S3600 reconditioned from casting rebuilder, still in plastic wrapping.