I have a 1973 Mustang Grande. It has a 351 Cleveland 2V engine. I am not sure if it is the original motor or not. I need to know how to tell how many teeth my fly wheel has, hopefully without removing the transmission. Can I count the teeth on the starter and tell?? Or is there some other way to tell?? I do not know what transmission I have either, it is an automatic 3 speed.