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Thanks to everyone who has responded so far.</p>

I had no idea that those exhaust systems robbed that much power from the engine! I think I’ll just go ahead and stick with the J-Tec pitts unless someone can show me evidence to the contrary.</p>

@ Thunderbolt47: Yes the AW P-51 does come with a sliding canopy. What I plan to do is set it up so it can be opened and closed from my transmitter. I have also given some considerable thought to making the rear radiator vent flap operational but haven’t decided if I should link to the throttle or to run it as a separate channel by itself. I’m still doing the research on it.</p></span>