Do I need to drill or modify the bumper to install this?

Verify mounting hole locations on your bumper before starting. Most rear diffusers use existing factory attachment points, but measure your bumper's hole spacing to confirm compatibility with the panel's mounting locations.

What surface prep is required before painting?

Sand and prep the surface with standard automotive prep methods before applying your chosen basecoat and clear. Clean thoroughly to remove any dust or residue after sanding.

Will this fit if I have an aftermarket bumper?

This diffuser is designed for factory bumper mounting points. If you're running an aftermarket bumper, verify that the attachment holes align with the standard factory locations before purchase.