Will this fit my existing fog light openings, or do I need to adjust?

Check your vehicle's current fog hole dimensions and compare them to the BT-1 profile. If your OEM bumper has fog cutouts, measure those openings before installation. You may need to trim or adapt the new cover to match your existing lights — reference your vehicle's original bumper template as a guide.

Are there sensor or parking assist holes pre-cut in this bumper?

This is a clean BT-1 profile with no pre-drilled sensor holes. If your vehicle has OEM bumper sensors or parking assist systems, identify the hole locations on your current bumper and transfer those marks to the new cover before final installation. Drill after confirming exact sensor placement on your specific setup.

Does this bumper work with aftermarket lower valances or air dams?

The BT-1 profile is designed around factory bumper geometry. If you plan to add a lower valance or splitter, verify that its mounting points align with the new bumper's structure. Test-fit any add-on components before final assembly to ensure proper gaps and clearance.