Custom Sedan Car Shell Design

I'm seeking a professional with extensive experience in automotive design to create a custom car shell for a G20 sedan. The task will involve creating a lifelike, detailed representation of the car, which should be a faithful rendition of the original model, capturing every aspect from the shape and size to material textures. I already have a 3D model for reference. The main task here is to copy it exactly for manufacturing and also the 3D model does not have any structuring underneath which needs to be done by you.

Ideal skills & experience:

- Expert in 3D modeling and CAD design
- Proficient in software such as AutoCAD, SolidWorks, or similar
- Prior experience in automotive design, specifically sedan type cars
- Familiarity with G20 model cars is highly beneficial.
- Able to provide files in STEP/STP/IGS format.