the bolts will hold the wing securely the gap between the hatch looks unsightly. I have read others have had to drill holes to attach it, but I didn't want to go that route so I used Goop automotive contact adhesive and then clamped the spoiler down overnight using wood workers clamps with the padded rubber surfaces. Has held like a charm through heat and cold and the sealant forms a nice barrier from moisture getting underneath the spoiler too. Highly recommend it.