What prep work is needed before painting?

Sand the surface with fine-grit sandpaper and wipe clean to remove all dust. Apply your chosen primer and paint system per manufacturer instructions. FRP accepts most automotive finishes without issue — confirm compatibility with your paint supplier if using specialty finishes.

Do these bolt directly to the headlight buckets, or do I need to modify the original panels?

These eye lids mount without requiring cuts or modifications to your OEM headlight housings. Verify alignment and mounting locations on your vehicle before final fastening. Use stainless steel fasteners to prevent corrosion at the joint.

Will these eye lids stay in place long-term, or do they require bonding adhesive in addition to bolts?

Bolted installation is sufficient for secure, long-term mounting when fasteners are tightened properly. Adhesive is optional — some builders add it for extra insurance against vibration, but it is not required for the lids to perform as designed.