CAD Design for RC Model Fire Box

This is a crucial component for my RC model project, and I’m excited to see the design come to life.
I need a CAD design for a firebox to be used in an RC model. This design will help me create a functional and well-fitted component for my model project.

I will only need the CAD file, laser-cut parts, and 3D printed/STL files for details.

The model will be 1/14 scale with as much detail as possible. A 48mm wide support for the radio-controlled chassis frame needs to be made, and I will also provide the wheel and rim dimensions so that everything fits perfectly.

I want to laser-cut the firebox and make it hollow to house electronics and other components.

The idea is to cut it from 1mm thick steel for weight reasons. I will only need the rear firebox of the truck; the cab and chassis are not included.

For delivery, I need a CAD model in stp format, dxf files for laser cutting, and stl files for resin.

**THE CHASSIS LENGTH MEASURES 507mm** Reference chassis image

Thank you