Will these skirts interfere with jack point access?

No. The rocker profile is designed to sit above the factory jack points. Verify your vehicle's OEM jack location before installation, and adjust mounting bracket placement as needed to maintain clearance for emergency jack use.

Do I need to drill new mounting holes, or do they use factory locations?

These panels bolt to existing factory rocker attachment points. No drilling required. Locate your OEM fastener holes, clean the area, and fasten the panels using appropriate hardware for your vehicle's chassis.

What prep work should I do before painting?

Sand the surface lightly to promote adhesion, then wipe clean of dust and oils. Apply your chosen primer and topcoat per the paint manufacturer's instructions. FRP accepts automotive paint finishes without issue when prepped properly.