Adjust Brick Mould CAD Files

I already have the original AutoCAD files for a mould that currently outputs a 445 mm L × 150 mm W × 220 mm H brick. I need your help identifying exactly which elements in those drawings control the finished... (Budget: $10 - $30 USD, Jobs: 3D CAD, 3D Design, 3D Modelling, AutoCAD, CAD / SolidWorks, CAD/CAM, Product Design, Solidworks)