To OP, There may a good why your finding a different engine. Many older engines sometimes an engine shroud change out and the correct number are never transfer to the replacement cover. This can lead to confusion and the wrong part installed later.
These shroud changes are done by inexperienced techs and owners not knowing just because a cover fit doesn't it has the right numbers on it when later repairs are needed. I have ran into this a couple times so far and it makes hard to find the right parts.
