Will this interfere with my trunk seal or rearward clearance?

The FX lip is designed with minimal trunk projection. Check your rear bumper cutout dimensions before installation — if your vehicle has factory sensors or parking aids in the bumper area, verify clearance at the attachment points.

Do I need to drill new holes, or does it use factory mounting?

This air dam uses existing factory bumper attachment points — no frame drilling. You may need fasteners to secure it to the bumper; reference your vehicle's rear bumper mounting diagram to confirm the hardware required for your setup.

How stable is FRP at highway speeds, and what prep does it need before painting?

FRP is stable and road-tested at highway speeds when properly secured. Sand the primer surface and prep with a quality automotive primer and paint system suited to plastic substrates. Avoid direct wax or sealant contact during the first 30 days of curing.