One thing to consider with a rotary is that it takes twice as much Fuel and Air to make the same power as a piston engine. That is why you have so many people running around in the rotary world with 1600cc secondary injectors. Its why I am about to order 1000cc secondary and I will be making in the 375-400 HP range on high boost, where a piston engine would not need nearly the same amount of fuel. On another not you will never have to worry about pistons hitting valves or timing chain/belt issues with a rotary. Before anyone starts pissing and moaning about Apex Seals you can buy a rebuild kit for the engine for under $1300 do that with a piston engine.