Will this wing hit the trunk lid when it opens?

No. The Redline profile is engineered to clear factory trunk travel. Verify clearance during a test fit before final installation, as aftermarket modifications to the trunk latch or hinges may affect closure geometry.

What mounting hole pattern should I use to secure it?

The wing is designed to use existing factory trunk lid mounting locations. Identify your vehicle's OEM attachment points before drilling, and do not add new holes unless the factory pattern will not accommodate the wing base.

How do I maintain the primer finish?

Sand the surface with appropriate grit to promote paint adhesion, then apply primer and your choice of color coat. After paint cure, regular wash and wax will protect the finish from UV and road exposure.