Some preliminary observations
In an appreciable effort to reach the best possible 1/72 wheels in plastic, each one is divided into 8 parts which need to be assembled. This is something I do not recall having ever seen in this scale, and it look intimidating at first glance.
The real gun shield has a complex design, but the PE piece has no guides to help in bending.
There are interiors, an engine, very detailed suspensions and all hatches are detailed on both sides, which would make the model usable in any condition (under repair, upside down, etc.). However, the engine would need all the tubes, which are normally present, to be added, and the interiors are nowhere as complex as the real ones (for example, the very intricate comm system between the front passengers is not present at all, as you can see in stage 10 of the manual).
I had no time to do extensive checkings for accuracy, but when comparing the sketch visible in the painting scheme against pictures of real M1114s I noticed something which should not be there: some sort of louvres (for air conditioning ?) on the right rear side. I do not know if it might be present in some field modification, but no M1114 I saw in photos seems to have it. Anyway, working on piece B11 to cancel this detail should not be hard to do...