Ugh, now what?

[markinnaples]

OK, found that my starter loosened up from when I fixed it previously (I guess I didn't tighten it down as much as I should have), and when I tried to start the car after a few times of fixing it, it apparently screwed up some teeth on the flywheel (Muncie trans). I got it tightened up and took it for a ride and it runs fine, but one time I started it, I heard the starter engage the chipped teeth but it has fired up numerous times.

So now I suppose I have to swap out the flywheel. Do I have to buy the entire new flywheel or can I swap out the flexplate part of the flywheel? Wasn't sure if they were manufactured with the ability to change out the flexplate or if the whole deal needs to be swapped. This all new to me, so I appreciate your thoughts and comments, thanks, Mark