I wouldn't worry too much about replacing your Evolution TPS .455 dual ball bearing twin needle 2-stroke. It's a good, solid engine that runs well once the needle limiters are removed. Replace the fly wheel with the regular drive washer that came with it, and you can actually try a Master Airscrew 10x7 3-blade prop with your original spinner.

A lot of folks think 3-blade props stink, but it's only the Evolution 3-blade trainer props that are weak. The TPS prop is like a 10.5x4 3-blade, and the pitch is so shallow that the plane can't build up speed even at wide open throttle. It's great for training with an Alpha 40, but it's too slow for flying a Mustang or Raptor PTS.

The two blade props will work just fine as well. The extra surface area of the three blade prop will actually help you slow down for landing a bit more by providing a bit more of an air break effect.

Wether you go with a 2-blade or 3-blade prop, your Evolution TPS should really open up quite a bit with just those couple of recommended changes.

Good luck and good flying!