According to my parts book: '55 is 1604 480 '56 is 1642 140 '57 & '58 is 1842 562 Are these Chrysler numbers the ones that an electrical shop needs or do they use the Prestolite numbers that are stamped on the starter case? Like, for my '55 I think the number is MCL-6304, or maybe not but that is the number that is the reference number used in my parts books. Warren Anderson Sedona,AZ