Will this bolt directly to my factory air filter box?

Yes. This is designed as a filter-back system, so it connects right where your stock setup ends. No modifications to the filter housing needed.

Do I need to prime or paint this before installation?

Stainless steel arrives ready to install — no prep work required. It won't rust or need coating.

What hardware or clamps come with this?

The assembly ships complete. Verify all clamps and hangers are present before install, and hand-tighten everything first to check alignment before final torque.