Do these extensions require drilling or modification to the bumper?

No drilling is required. These extensions are engineered to use your vehicle's factory mounting points. Verify your stock bumper is in serviceable condition before installation — any cracks or missing mounting tabs will prevent proper fitment.

What prep work should I do before painting?

Sand and prep the surface with your chosen sandpaper and primer system before applying color coat. FRP benefits from a flexible primer to handle panel flex during thermal cycles. Test your paint adhesion on a small area first to ensure compatibility with the gelcoat.

Will these fit if I have aftermarket exhaust or lowering suspension?

Fitment compatibility depends on your specific exhaust routing and suspension geometry. Before ordering, measure your exhaust exit height and rear bumper-to-ground clearance, then compare against the diffuser profile depth. Most bolt-on exhaust and coilover setups do not interfere, but low-slung custom builds may need verification at your local shop.