Hmmm… an A & a D kit. Well, first, that would mean the kit should come with 2 sets of rotor blades. The D model blades are wider than the A blades, & the difference would be very noticeable in that scale. Also the A model blade dampner bracket is an open design, while the D model is solid.
The instrument panel layout in the cockpits are different from A to a D, & the ECL (throttle equivalent) are on the bottom on the A, but are on an overhead panel on the D.
The aft pylons access doors are different as well. The A model doors are solid, with 4 small grill openings, while the D model has a big notch in it, but I would think it would be easy to include a set of each of these doors. The trailing edge of the aft pylon differs also. The As came to a tapering point, looking like a teardrop when viewed from above. The Ds trailing edge is flat & blunt.
Some panel lines are different from the A to D. While they look the same, the A only had 2 fuel tanks, while the D has 6. That means the “over the wing” gravity fuel filler ports might be separate. The As engine inlet screen are smaller than the D, & the engine cowlings have different mesh screens openings.
The pitot tube number & location are different. The D has 2 on booms on the nose (the machine gun looking things on the nose) & the A only had 1, mounted above the windshield.
The center cargo hooks are different, with the As having a rolling beam support, & the D is a solid beam support.
Those are all I could thing of right off the top of my head. To me, it seems feasible that the kit might include parts for both, but I’m not convinced that they will get it right, especially the rotor blade width.
Chris Ishmael, 13 year Chinook fixer