Mechanical 3D/2D Modeling & Piping

I have a set of mechanical parts that need to move from concept into production-ready documentation. What I need from you is two-fold:

First, create precise 3D models of each part and the full pipe routing in STEP format so I can drop them straight into our master assembly.

Second, generate fully annotated 2D drawings for every component and pipe run. Each drawing must clearly show:
• Dimensions and related tolerances for machining
• Material specifications to guide purchasing
• Concise assembly instructions so our shop floor can build without extra clarification

Models and drawings have to line up perfectly—if I drop your STEP files into the main assembly, every bolt pattern and tube length should match the 2D callouts. I will review by overlaying your work on our existing layout and checking fit, material callouts, and tolerance stacks; once everything passes that check, the job is done.