Guys we are going to start some club pylon type racing,, we are going to be using some extra 300 style airframes,, we are only allowed to use factory engines, like OS .46 tt .46 ,, supertigre, etc,etc,, , with stock mufflers,,, and we can't use any nelsons, or Jetts,, , what is the best stock .46 that makes the most power,,, we are allowed to only use 10x7 Apc prop