RE: Sachs gas engine
45, you can try, but there really isn't much width to play with. I will post a picture of my Mustang. Not sure if you can see it very well, but this is the muffler side.
No offense, meant, crash, but I've seen 2 Mustangs with the 41, and boy, they were under powered. My 3.2 really hauls mine around, almost to fast.