When I thought I had burned up the first motor I had on the boat (which was a 20"), I found a much newer 25" for a reasonable price. Raised the transom I had poured and packed with fiberglass earlier. Did the same for the added 5".
Come to find out the old motor had only minor detonation on one cylinder.
While making a plate for the pour, I just did a little more work and made it permanent.
