Will this mount at the factory attachment points or do I need to drill holes?

This mounts at factory rocker points—no drilling or welding needed. You'll use the existing anchor structure on your Mega Cab.

Does this come with all the bolts and hardware I need to install it?

The bull bar assembly is included. Confirm what mounting hardware you already have at the factory points before ordering fasteners separately if needed.

Does the chrome finish need any prep or protection before I install it?

The chrome is ready to mount as-is. After installation, wash it regularly with mild soap and water to keep the finish looking sharp and prevent water spotting.