UPPER REAR TOP OF FENDER EXTENSION MOLDING - RH - GM # 22512186 (THIS IS THE PART THAT IS HELD ON WITH PLASTIC CLIPS THAT GET BRITTLE & COMMONLY FALL OFF THE REAR TOP OF THE FENDER. IT GOES IN LINE WITH THE REAR HOOD TRIM. THIS WAS DESIGNED TO FOLLOW & CONTINUE AROUND TO THE WIDE MOLDING ON THE TOP OF THE DOOR. SOME 78-80 MODELS HAVE THESE BUT ARE ONLY ONE PRONG. THE SLANT BACK ROOF STYLE USES THAT. THIS IS A 2 PRONG UNIT. 78-80 MAY REQUIRE MODIFICATION DEPENDING ON STYLE)