RE: P-40 Warhawk Engine/Muffler question
Randy if your going with a 2st 91 then your pipe selection is pretty limited to the Pits or slimline mufflers with a 4str theres alot more flexability as LDM pointed out.
there is a few threads on the TF P-40 the one by Richard Lee has some good Photos of his plane as well as some video.
here's what I did for my Hangar-9 P-40 the only thing you see is the little rubber deflector out the back,I am using a OS91 surpass.