N-Scale Engine & Stack Prints

For a committee meeting I need models of 240 twenty-cylinder natural-gas engines and 240 matching 4' × 8' exhaust stacks. I am after physical 3D printed pieces—digital files alone will not meet the requirement—so please handle the full print run on your equipment... (Budget: $500 - $1000 USD, Jobs: 3D CAD, 3D Design, 3D Model Maker, 3D Modelling, 3D Print Design, 3D Printing, 3D Rendering, 3D Visualization, CAD/CAM, Mechanical Engineering)