904 Flexplate??

Hi Guys,

The flexplate in my Dart has no teeth left thanks to a bad starter. Ive got the new starter but i need to know if the flexplate or Torque Converter is a 10" or 10 1/2" bolt pattern.

A company over here has both but which size is it??

Thanks again
Nick

As you may be able to tell, i know nothing about transmissions!! LOL