Can I run my exhaust through this bumper, or do I need to modify it?

This bumper ships without exhaust cutouts, so you have full flexibility. If your setup uses a factory exhaust exit, you can carefully cut the opening to match your system's diameter and position. Measure twice before cutting, and seal any raw edges with epoxy or filler to prevent moisture absorption.

Does this bumper have sensor or fog light holes pre-drilled?

This is a clean panel with no pre-cut openings. If your vehicle uses OEM sensors or fog lights, reference your car's original bumper hole locations and mark them on this cover before drilling. A hole saw sized to match your sensor diameter works best for precision.

What should I do to prepare this for paint?

Sand the surface lightly with appropriate grit to scuff and remove any dust, then wipe clean. FRP accepts urethane, polyester, and acrylic paint systems. Verify your chosen paint is compatible with plastic substrates, and follow the manufacturer's primer and topcoat specs for best adhesion and durability.