The 1963 215s came with an alternator. The bracket for these cars bolts up and accepts either a 12SI alternator or a CS130 with with the correct mounting ears. I used the 63 bracket and a CS130 from a 1989 Olds Custom Cruiser. I swapped the pulley from the generator onto the CS130 so the width was correct. Installation and wiring is extremely easy. Been working great since 2010.