Will this lip interfere with my trunk seal or spoiler if I'm running one?

The Type M design is engineered to sit low on the bumper without interference to trunk or spoiler geometry. Verify clearance by checking your existing aftermarket spoiler height before installation — if your spoiler sits very close to the bumper, measure the gap to ensure the lip doesn't crowd it.

Should I use adhesive, drill mounting holes, or both?

FRP lips can be secured via adhesive alone for a clean look or through fastener holes for extra security. Verify your bumper's mounting provisions — some factory bumpers have pre-drilled anchor points. If using adhesive, sand and prep both surfaces before applying your chosen product. If drilling is your preference, mark and test-fit before committing.

How stable is an FRP lip at highway speed?

FRP offers good rigidity for a front lip, especially as a two-piece set with solid panel construction. Ensure mounting is secure and surfaces are clean and fully adhered. At highway speeds, any aerodynamic component is stable when properly installed — loose fitment creates the appearance of movement, so confirm everything is tight before extended drives.