I think a double platform van with vertically planked doors over the centre two sections and the Gap. Detail for it to slide one way, Henri’s conversion should give you some inspiration about the slide bits for the doors. Oh and yes some detail to cut off so that can occur.
Here is my double ended one again, different basis but oerhaps gives you food for thought. Sorry to all of you that have seen this Van before and I still have done nothing about that dratted roof!
What you trying to find a colour match for? The yellow or the brown.Done some more work, and the van is ready for the paint shop.
However this will have to wait as in need to visit an actual model shop to try and find a good colour match.
I went for non opting doors in the end, as I never use them and to make it easier. But I model the door runners using 4mm angle plasticard
here’s a picture of my modified van rake that I ran happily in the sun today
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