Will this interfere with my trunk seal or rear bumper?

No — this is a front lip spoiler mounted to the front bumper, forward of the doors and trunk area. It has zero interaction with trunk sealing or rear geometry.

Can I install this without drilling into my bumper?

The Lazer style lip is designed for adhesive mounting to the underside of your bumper fascia, supplemented by discreet fastening points. This minimizes drilling and preserves bumper integrity — confirm your bumper's existing mounting holes align with the panel's anchor points before final adhesive application.

Will this stay stable at highway speed?

Yes. The single-piece carbon fiber construction is rigid and the mounting geometry distributes load across the bumper structure. Ensure all fastening points are fully seated and any adhesive has cured per the manufacturer's recommendation before highway driving.