These are just flat graphics, added for cosmetic reasons only. They are not intended to be fleshed out in 3D. You may laminate some pieces but you have to do it at your own risk. The detail is completely made up. There is no reference material of the real vehicle available which I could use as a base. You would have to recess the bottom which may require an extensive rework of the internal skeleton. There are several tubes which run from the front to the aft of the vehicle. Since the bottom is uneven there is no way to add those tubes without cutting holes into the protrusions of the floor.I am glad to see that you are including a detailed undercarriage.