We have two IGES files, which together make up an entire truck (one is the cab and the other is the chassis and wheels). These models are composed primarily of surfaces. We would like them as solid parts. We currently have IGES, STL, and SolidWorks part formats for you to work with.
Our objective is to have a solid part with the shape and dimensions of the truck. The truck's surfaces are not all joined. I expect you will need to seal them, around the entire body, and then convert the sealed body to a solid. The positions and dimensions of all external surfaces are correct. There is no need to delete or edit existing external surfaces.
The underbody of the cab is not as important as the front, sides, top, and back of the truck.
The file is larger than 25 mb, so we haven't uploaded it here. Instead I have included a cutaway view of the truck. We will need to send you a dropbox link. Please feel free to ask any questions.