Good choice, I was going to do a RAF Mitchell III (B25J) for this build, but don't think I'll have the time.
As the GB threads are now open, perhaps Wojtek can move this?
This will have to be an unoffical build. I started it a couple of years ago and never completed it. Wojtek was very helpful and helped me clean up the mess. Back then I did not know what I was doing and I tried to fill the seam with putty. It is clean now and ready for paint. I just need to add the wings, engine, tail and nose etc. I have an old thread with all kings of good infromation on the Russian B25. I will try and add a link