This goes on the INSIDE of the car up on the firewall . helps limit the heat transfer into the cabin.
Precut with a harder outward surfaced that faces the passengers
This one is if LHD cars with FACTORY AC.
Fits:
68-72 GTO LeMans Tempest
69-72 Pontiac GP
68-72 Buick Skylark GS
68-72 Chevelle, El Camino,
68-72 Olds Cutlass
70-72 Malibu