An entirley different two-seater was produced by the Bell Company for internal use.Two P-63E-1s were modified by Bell with a separate observer seat in the rear fuselage, located behind the engine and mounted under a separate canopy. A probe was mounted which extended through the spinner and to make space for the observer the radio equipment had to be moved forward in to the armament bay.. The aircraft carried the civilian registrations NX41963 and NX41964 and both id numbers are included in the kit. Also included is fret of photo-etch and canopy masks. A great kit of a rare subject.