The Evo engines are a mixed bag. Some run great out of the box. Some are reported to run great after the muffler is modified. For what you want I would suggest buying a Thunder GP42. It will be more reliable, less pricy to buy and give you more power. If you insist on the 36 size then I would look at the Thunder Tiger Pro36. But why spend more money for less engine if you don't have to?!?[8D]