I am looking to put a four stroke motorcycle, or atv engine in my 1985 Odyssey. Does anyone have any suggestions on what a good choice would be? I would like it to run on pump gas, be fairly quiet, and to be able to maintain speeds of around 60 mph. Thank you.

 

I have a klx 650 Kawasaki engine in mine and it works great, although I'm looking to swap that out with something a little newer like a klr.