Does this mount at factory attachment points or does it require drilling?

Mounting method is not specified — you'll want to verify mounting location and bracket style before purchasing to confirm compatibility with your truck's frame or rocker panel.

Do I need to paint this before installation?

Mounting first, then painting, is the standard approach. Install it, test-fit, then pull it off and prep the surface per your paint plan.

What hardware comes with this?

The assembly includes the step bars themselves. Bolts, brackets, and fasteners are not confirmed in the specs — confirm what you need before installation day.