Here is an engine cowling for a TF .60 size warbirds (Corsair, Zero, FW-190, and AT-6). The length of the cowl to the mounting holes is 4.5 inches and the inside diameter is 7.25 inches. The cowl has been painted, but I doubt it was ever mounted on a flying model. I bought this several years ago and I no longer fly glow airplanes. Contact me for more info. Thanks, Kurt.