Redesign Aluminum Oil Pan for Polymer Manufacturing

I am looking for a skilled freelancer to redesign my successful aluminum oil pan for polymer manufacturing. The new design must account for the unique requirements of polymers, including reinforced surfaces, durable inserts, and adjustments for an O-ring seating surface. The deliverable should be manufacturing-ready 3D files created in SolidWorks. The design must also be visually appealing and suitable for mass production methods used with polymers.