I have a 1965 Fastback, with a 289 and a T-10 transmission. Back in 1988 my father and I were going to rebuild the engine but instead he chose to swap the original 289 for one that was already rebuilt. I was given the mustang in 1998. In 2003 I replaced the starter. As it turns out the starter that works is DL3153 at Autozone. It is not the same starter I helped my dad swap out when I was young. It is not even the starter that comes up when looking for a starter on car parts sites. According to AutoZone's website the starter I bought in 2003 is for an automatic transmission. I recently pulled the transmission off to rebuild it. I removed the flywheel to check it out. The flywheel is for a manual transmission. It has 160 teeth and the date code indicates it was made August 1964. Which puts it in line for my mustang. My dad bought the mustang Oct 1964. So why can't I use the correct starter? What am I missing here?