is there a book on manual that will tell me what size screw or bolts is used where. for example i'm changing the weather stripping, i want to replace the rusted screws and had to drill some out to. how do i find out what size screw it is. corvette shops want 3 bucks for 4 screws. but i can get a box of 100 for 3 bucks from the auto box shop if i know the size.