You’re confused anyway but that’s besides the point. Yes the V6 uses a 11”, 164 tooth at some point I guess in the 90’s Ford standardized starters somewhat. So yes I have a 157 tooth flywheel with the V6 164 tooth starter and it work great. Take it a step farther I have the starter that came with my GT40P. I never thought to see if it would work. It has this extra wing that actually sits on the block plate but gives the appearance of it being clocked differently but it actually fits. Functionally the same as the V6 starter. It looks more like additional bracing now that I know it fits. I thought about using it but it looks like it spent 10 years at the bottom of a mud puddle.color me confused, What ring gear do you have ? I would have thought a 157?? Does the 97 v6 T-5 Mustang have a 164 flywheel ?