Hooker Headers 42501HKR Premium Stainless Steel Exhaust System Height: 13.000 Width: 19.000 Length: 52.000 Weight: 68 Vehicle Type: Hooker Headers 42501HKR Premium Stainless Steel Exhaust System Fitment: 1981/Pontiac/Firebird/Trans Am Coupe 2-Door/5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated::Legal in California Only for Racing Vehicles^^1981/Pontiac/Firebird/Trans Am Coupe 2-Door/4.9L 301Cu. In. V8 GAS OHV Turbocharged::Legal in California Only for Racing Vehicles^^1981/Pontiac/Firebird/Trans Am Coupe 2-Door/4.9L 301Cu. In. V8 GAS OHV Naturally Aspirated::Legal in California Only for Racing Vehicles^^1981/Pontiac/Firebird/Trans Am Coupe 2-Door/4.4L 267Cu. In. V8 GAS Naturally Aspirated::Legal in California Only for Racing Vehicles^^1981/Pontiac/Firebird/Formula Coupe 2-Door/5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated::Legal in California Only for Racing Vehicles^^1981/Pontia...