There were a lot of Corvettes in the early years that had flared fender wells or radiused fenders. If you do not want to change all the panels, these lips may be what you need. They measure 25" long and are 3" high. So you need to measure what has been removed from your original Front fenders, or you can cut these down to fit any size of application.
Learn more from the following Mid America Motorworks Knowledge Library article:
Corvette Body Components from Fiberglass to Resin Transfer Molding