1964 Interceptor engine parts?

Anyone-

I have a 1964 American Skier I've been restoring (replacing stringers, re-wiring, etc.). Last time I ran the engine 2 years ago, I noticed that the starter sometimes didn't engage the flywheel, so I recently removed the starter to see what I could see. I found a pretty good-sized pile of metal filings in the bell housing below where the starter fits, and it looks like the teeth on both the ring gear and the starter are pretty worn down, like the starter gear was too tight against the ring gear. I also notice that the thin metal "gasket" between the bell housing and the block looks like maybe it's not the original because it doesn't have a third "ear" where the third bolt hole in the bell housing is, and it feels like someone tried to grind the inside of the 4-inch hole into which the starter fits maybe to try to position it farther away from the ring gear.

I also noticed that there is oil al over the ring gear, so I'm thinking the rear main seal may need to be replaced.

Here's my question: how should I go about looking for the parts I'll need? The engine has "INTERCEPTOR" stamped on it, and there is a number stamped on the front of the engine (SN I think): GT1R421821 . On the top is stamped "1001250-1" .

Any thoughts?

Thanks for the reply.
I don't have much to take a picture of since the boat is fully taken apart right now in my garage.

How can I figure out what parts to ask for? All I have are the numbers stamped on the engine. Won't I need some more information if I go to NAPA and start asking for a ring gear? Also, it looks to me like the metal "gasket" between the bell housing and the block is not the original, since it doesn't have the "ear" for the third bolt-hole. I could show you a photo if I knew how to do that in this forum. What is that "gasket" called? It seems like that's what is supposed to position the starter, and using the wrong one may have caused the damage to the gears.

-Greg

[QUOTE=8122pbrainard] .

That "gasket" I believe is simply the backing to the bell housing. You say it locates the starter?

QUOTE]

I think this part,on a Windsor, is called an engine plate. I would think it might be the same name on a Y.

Greg,
I don't think ether of those starters is correct. They sure don't look like the one on my 312. That's probably why someone's been messing with that plate. It even looks like someone has taken a file to the pilot on the face of the first starter.

Get the manual, look on Ebay and take a trip to your local auto electric shop.