Reman alternator for Datsun 510 1968-73. There are several different styles of alternators for the 1968-73 cars. Mostly the connector plug is the determining factor. Please look at pictures to determine which alternator you need.
Early Style 1: 4pin connector with pigtail
Early Style 2: 4 pin connector on alternator
Later Style: 2 Pin "T" style connection