I don't recall the exact number on the flywheel-believe it's 164-or 168. The starter was matched to the flywheel teeth wise. Unfortunately not sure about whether the ring gear was pressed on from the back or front. It appears to be in the exact center of the flywheel. Apparently the starter seems to be sliding out far enough seeing how its frozen against the tooth on the flywheel. I'll get to tearing it apart in a month or so-have a ton of stuff to do : ( I will get an engine plate and really try to reference the starter/flywheel. See about getting it from ford or something. I do not want to be doing this again soon lol. Thanks again for all the info. I appreciate it and will keep ya posted.