Flowmaster American Thunder Single Exhaust System - 1998-2002 Camaro/Firebird 5.7L LS1 820995 (4) 45° -4AN to 1/8"NPT

(4) 45° -4AN to 1/8"NPT valve fittings

Universal Muffler - Some adaptation may be required

Vehicle Applications: 1955 thru 1992 Chevrolet Cars and Trucks 6/8 Cylinders

2-wire hall-effect speed sender that is compatible with GM/Chrysler applications (7/8" - 18THD)

Flowmaster American Thunder Single Exhaust System - 1998-2002 Camaro/Firebird 5.7L LS1 820995 (4) 45° -4AN to 1/8"NPTFor the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster Cat back exhaust system provides. D. O. R. (Dual out rear) systems are the perfect choice. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and