Will this cover fit over my existing bumper or replace it completely?

This is a cover that fits over your factory bumper assembly. Your original bumper stays in place underneath — the cover slides over and bolts to the existing mounting structure.

Do I need to remove the bumper or can I bolt this on while it's attached to the van?

Most installs are done with the bumper still on the vehicle using basic hand tools. Work from underneath or with a lift to access bolts easily. Refer to your vehicle's service manual for exact bolt locations and torque specs.

Is the chrome finish durable for commercial use or daily dock exposure?

Chrome resists surface corrosion well, but minor contact damage will show scratches. Regular washing and occasional waxing preserve the finish. Heavy-duty dock work may accumulate scuffs over time — that's normal wear on any polished surface.