Hey guys....I'm about to order a Best top bikini top for my 72 Bronco. I was curious if anyone here has installed this item before.....the description says the windshield channel is installed with screws and may need drilling if factory holes do not line up....I don't understand why they wouldn't use bolts to attach it to the factory holes. I really don't want to to use self tapping screws and screw into the metal cuz that's gonna look pretty crappy. Any thoughts?