Do these bolt straight to my truck without modification?

Yes, these are direct fit to factory mounting points. You'll plug into existing wiring harnesses with no drilling or custom brackets required.

Are bulbs included, or do I need to buy them separately?

Bulbs are not included with the assembly. You'll need to source LED bulbs that match the socket type for your specific year — check your owner's manual for the correct spec.

Can I clean the chrome housing without damaging the finish?

Mild soap and water work fine. For heavy oxidation, use a soft cloth and chrome polish. Avoid abrasive pads or acidic cleaners that can strip the plating.