Just a thought for something "different" in a B-25:
I built an Eureka B-25 while in Japan in 1958. I was pretty proud of it as it progressed, but a guy working at the hobby shop pointed out the B-25s had gull wings, mine did not, so I traded it away for something. Year and years later, I became aware that the first eight or nine B-25s were straight- wing dihedral configurations, my Eureka kit was probably ok, although I've never found another like that one. The spars through the nacelles set the dihedral (or gull wing), so what it is, is what it is.
I examined Ron Duly's B-25 Eureka kit and it showed only the gull wing and the parts were cut for that.
If anyone were to build a scale model of one of the first Mitchells, it would raise eyebrows, to say the least.
dg