Jv44 would be great as well, the desperation of that squadron and the talents of the pilots would add drama to a good (if made properly) action film. but concerning BoB the film and the real thing, in the film they use Spanish remakes of the Bf109 using existing airframes with new engines and same with the He111's, in that movie, they have (great engine indeed) merlins. what the "Bf109s" use is unknown to me however. but anyway, concerning the guns, early Emils DID HAVE wing guns. (Mg17s i believe) so that isnt too off but that should be changed in Memphis Belle! one more thing about the "109s" in BoB, if you look through the wallpaper section on this site as well as the color photo gallery, you will see a "Bf109" that look like it has an allison from a P-40 and also looks like a modified P-40 in general (i once showed crazy the pic but forget what it is called, but the wallpaper is simply titled "me109" if i remember correctly.