This is a 4mm:1ft (OO-scale) single-piece body and roof for my Southern Diagramme 3105 plastic-bodied luggage van, British Rail PMV. You will require a chassis (with detailing parts), wheels, and windows to fit into the sides (all uploaded separately). This model is also available as separate sides/ends and roof. To model the van correctly, you will need a chassis which is LONGER than the body, because the vans were shock-absorbing by allowing limited sprung travel back and forth along the chassis. You will need to glue the body onto the chassis centrally. You could try to mount it with some sort of spring and weight arrangement it to give a realistic shock-absorbing movement, but expectation should be managed. I have also uploaded a sprue of windows, which may give a better overall result than other methods of glazing. The real vans were painted black, though in later years some were repainted in green. Choose a material for your print, trading off surface smoothness vs. price.