Main Bearing Set Crankshaft 240Z 260Z 280Z

New set of engine crankshaft main bearings for 1970-83 Datsun 240Z, 260Z, 280Z and 280ZX. Available in std , .010" oversize and .020" oversize. Please advise when ordering what size is needed.

*Also see Clevite main bearing set PT# 800-1679