Hi John and Ed,
Thanks for looking in folks.
John, the tyres are form a Resicast set of flat tyres and burnt out rims.



Thje set also comes with a set of positionable steering.
Hi ed,
Not all the jeeps had the windowscreens removed. There are a couple of good pics on Page 190 of Arnhem Then and Now showing Major Oliver's Jeep unloading from a Horsa with the screen in place, which is what I based that vehicle on.
Modifications were made by the REME at individual unit level, so whiilst there was a set specification for the conversions there was also great variety in what actually got changed.
Cheers
Al