Flowmaster 67-'74 Chev. Camaro / Pontiac Firebird, '68-'74 Chev. Nova, V8, All 2.50" Mandrel Bent Tubing From Trans X-Member Back, Incl. H-Pipe, Hardware, 80 Series Crossflow Muffler, American Thunder, DOR, (Does Not Fit Convertibles W/O X-Brace Modification, Call Tech Support Line For Assistance),16 Gauge Aluminized Steel