Troy Built Horse older engine blow up. What to do.

I have an older model Troy bilt horse. )I belive 1982. It is 6 horse electric start. I was tilling yesterday and it made a metallic sound
then died. It has no compression when pulling the recoil starter.
I am debating fixing this or scraping and buying a cheaper one. Can you tell me how much a replacement is? Do you sell rebuild kits for my current engine? Here are the numbers on it:
Also, I have found an engine used online. The model is H60-75505R with Serial 0096R. It is a manual start. It is sold as is for 75 plus shipping. Can you tell me if this can be converted to electric start using my current blown up engine?
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