There is a steel clip that fits the lower passenger side of the shroud and holds it tight to the radiator.
400 cars and A/C cars have rubberized sheets that are die cut and fit the gaps at both sides of the radiator, plus a steel tray below the radiator, plus a pair of steel panels that fit the area between the core support, hood latch, and bumper reinforcement on both sides.
Vikki 1969 Goldenrod Yellow / black 400 convertible numbers matching