Does this mount using factory attachment points or will I need to drill holes?

This guard mounts at factory points — no drilling required. Use the OEM fastener locations on your truck's frame.

Do I need to prep or paint this before installation?

It ships in gloss black and ready to install as-is. If you want to match a different finish, light surface prep with soap and water is all you need before applying your choice of paint or protective coating.

What hardware comes with the guard?

The assembly is included. Verify you have the correct fasteners for your vehicle's frame before starting installation — your truck's service manual lists what you'll need at each factory mount point.