THIS IS A SMOOTH FIREWALL WITH A 2" RECESS THAT WILL FIT ALL 68/72 A-BODY CARS. THIS INCLUDES: CHEVY: MALIBU, CHEVELLE; OLDS: CUTLASS, 442; PONTIAC: GTO, LEMANS, TEMPEST; BUICK: SKYLARK, GS. WE CAN MAKE THIS FIREWALL WITH ANY WIDTH AND DEPTH YOU MAY NEED. THE 2" SETBACK WILL MATCH UP WITH THE STOCK TUNNEL.