Do these covers require any drilling or permanent modification?

No. These bolt directly over your factory handles. Test-fit them on the vehicle before you fully tighten everything down to make sure alignment works for your truck's specific year and condition.

Will the textured finish show dirt or water spots?

The matte texture is designed to hide dust and fingerprints. Water spots will rinse off like any other plastic part — just use a soft cloth and mild soap.

What mounting hardware is included?

Hardware is not included with the covers. You'll need fasteners compatible with your factory handle mounting points — check your vehicle's service manual or test-fit to confirm what you need before ordering extras.