Well, I have an Airfix 1/72 Mosquito FB Mk.VI kit, that has progressed as far as gluing both wings together. Yesterday I did some surgery (or better say - amputation) and cut-off upper part of engine nacelle (which is molded with wing) from the port wing. I also caniballized engine nacelle from old Lockheed Ventura kit and tried to dry fit it with Mosquito wing. To make long story shot, I'm planning to participate in this GB with my DH 98 Mosquito -> Nakajima J1N1-Sa "what if". I was thinking tandem cockpit instead of Mosquito's side-by-side, but then I'm not trying to sculpt exact copy of Gekko. So I'm limiting changes to radial engines, two upward firing cannons (schrage musik), different undercarriage legs and longer nose with radar array. Fortunately enough, I have decal sheet with hinomaru's left from horrible Airfix Zero, which looks quite acceptable. So far I'm thinking of simple all-black night-fighter paint scheme.
My another idea for this GB is Republic P-47 -> Reggiane Re.2000. Of course, P-47 is much larger, than Reggiane, but hey, they have same ancestor - Seversky P-35! If I'll get inexpensive P-47 kit, I might give it a try. Imagine this juggernaut armed with just two machine guns in engine cowling