Will this interfere with my factory bumper vents or brake ducts?

No. The Max Style lip is designed to sit below the bumper's lower edge without blocking any OEM intake or exhaust paths. Verify clearance on your specific bumper before final installation if you've made prior modifications.

Can I use adhesive instead of drilling, or do I need to bolt it on?

This lip uses the factory mounting point locations on the lower bumper, so no additional drilling is required. Adhesive alone is not recommended for this component due to vibration loads; fasteners through the existing holes provide proper hold and alignment.

Will this lip stay stable at highway speeds?

Yes. Once properly secured through factory mounting points, the lip maintains its position during normal highway driving. Ensure all fasteners are tight and check them periodically, especially in the first 500 miles after installation.