Flowmaster 42583 43083 Flowmaster 80 series Cross Flow mufflers are the perfect choice for 1982-2002 Camaro and Firebird, Buick Grand Nationals as well as many other vehicles. Aluminized for rust protection. Sold as one Flowmaster 80 series Cross Flow muffler. Scroll down the page for additional listings. Flowmaster 80 series Cross Flow mufflers 80crossflowAPPLICATIONS:: Flowmaster 42583Flowmaster 43083 Sold as one Flowmaster 80 Series cross flow muffler. 5308352580APPLICATIONS:: Flowmaster 53083Flowmaster 52580 Sold as one Flowmaster 80 Series cross flow muffler. 42582APPLICATIONS:: Flowmaster 42582 We welcome CANADIAN customers! For ordering information, click on "Orders To Canada" at the top left side of this page. PAYMENT METHODS: PayPal, Visa, Mastercard, Discover, American Express, money orders.