The upper image is what I mean by a dome nose, that is a B-24D and wouldn't be allowed.
The lower image is of an aircraft that originally had a nose turret. In its bomber form it would have been accepted as a skin with no problem. It probably flew many missions with that turret before being retired to serve as a formation ship. It then had its armament removed to save weight, with the turret areas plated over to reduce drag.
There are two reasons HTC might object to this aircraft as a skin. First, the faired-over turrets alter the shape of the aircraft and second it was not used in a combat role. Formation ships carried no guns or bombs and turned back to base once the formation had assembled around it.
The 223 Squadron aircraft has had its nose guns removed but the turret is still there and although it was not used as a bomber it was still a combat aircraft, so it is more likely to be accepted by HTC IMO.
Captured aircraft are never allowed as skins.
Its always safer to ask HTC or in here if there is anything non-standard about a subject you are going to work on.
