Can I put a 91 2 or 91 4 stroke in my Super Stunts 60 I would like to have power to go unlimited vertical and Iam not sure if a 60 - 75 size will do that.
If anyone has ideas I will gratefull for your input

.91 two stroke would be more power. I put one in a 60 size stick and one in a 60 size shoestring. WOW. What a ride. You will like it.

Thank You