Will the diffuser create clearance issues or interference with the trunk seal?

No. The lip is designed to sit flush with the existing rear fascia and will not interfere with trunk operation or weatherstripping. Confirm final fitment with test opening before final adhesive application.

Does this require drilling or can it be adhesive-mounted?

This spoiler is designed for adhesive mounting to the rear bumper cover. No drilling is required, but surface prep and a quality automotive adhesive (not included) are essential for a permanent bond.

Will this spoiler stay stable at highway speeds?

Yes. The single-piece FRP construction is rigid and the diffuser design is aerodynamically balanced. Proper surface cleaning and full adhesive coverage across all mounting contact points are critical for long-term stability.