I was in the same boat as you.........Got a SE and need a engine. From what alot of guys say, the SE likes a 2 stroke.......As in a Irvine 53..Which I think you will find that that is the most popular....I bought a used NIB Irvine 46 on here, so I went with that. If time permits me to finish it up, I hope to give a report on it.