Do I need to buy fasteners separately?

You'll use your truck's existing bolts if they're in good shape. If any are damaged or missing, grab replacements from your local hardware store — standard size fasteners work here.

Can I bolt this on without removing the old one?

You'll need to remove the damaged or worn valance first to access the mounting points. Expect 15–20 minutes with basic hand tools once the old piece is off.

What prep does this need before painting?

Wash it with soap and water, let it dry completely, then sand lightly with 320-grit or higher to help primer stick. A coat of automotive primer locks everything down before your color coat.