This bonding strip is the piece that is between the metal header bar that supports the headlight buckets and the top panel surround. It is riveted and bonded to the metal bar first, then it is bonded as a unit the top hood surround. Before doing this, the alignment of the headlight buckets must be considered.
Learn more from the following Mid America Motorworks Knowledge Library article:
Corvette Body Components from Fiberglass to Resin Transfer Molding
ACI