Hi Scot,
I agree with Boobala,,,perform the teardown before ordering parts. You may find so many other parts that needs replacing, it may be cheaper to get a replacement engine from Harbor Freight or small engine warehouse.
There is a guy on YouTube that goes by the name of 65ford that does lots of small engine repair vids. He said an excellent source of a good used engine are from pressure washers as the pumps fail frequently. Check Craigslist.
Regards
Jeff