Do these vents require hood pins to secure them during installation?

Hood pins depend on your overall hood setup and how you plan to secure the factory latches. Check your vehicle's hood latch compatibility before drilling or fastening these vents — ensure they don't interfere with existing latch points or hinge movement.

Will these vents maintain their finish in UV exposure?

FRP with UV-resistant gelcoat is built to handle sunlight, but like any unpainted plastic surface, it will benefit from clear coat protection once you apply your chosen topcoat finish. This is why raw FRP condition gives you control over the final sealing step.

How do I prepare these for painting?

Sand and prep the surface with the grit and primer system your chosen topcoat requires, following your paint manufacturer's prep guidelines. This ensures proper adhesion and a finish that matches your hood.