I installed a Thunder Tiger 60 Pro with a gallon of fuel ran through it for $65. Unfortunately the mount was drilled for a TT 60 GP which has a shorter shaft and I have a 3/8" or less gap behind the spinner but SPA is in a couple weeks so I need to wait to make any changes.
The engine, fuel tank, and landing gear were installed then a preliminary weight and balance was done and it was way nose heavy so I installed the servos in the rear. I used two elevator servos for the extra weight.