Do these fenders require drilling or permanent modifications to the OEM body?

No. These over fenders are designed to bolt onto your existing rear quarter panels using factory mounting points. Once installed and finished, they can be removed without altering the vehicle structure.

What finish should I apply, and do I need to sand the panels first?

Yes — sand and prep the surface before applying your chosen primer and paint. The panels ship in raw FRP condition, which means they've been prepared to accept your selected basecoat and topcoat. This gives you full control over color matching and final appearance.

Will these over fenders clear my wheel setup and suspension?

Over fenders sit on top of the OEM body and typically provide additional clearance. Before installation, measure your wheel width, offset, and suspension geometry to confirm adequate tire clearance. Reference your vehicle's service manual or consult with a suspension specialist if you've made significant lowering or wheel changes.