Flowmaster Pro Series Muffler - 3" Inlet, 3" Outlet - 6" D x 16" L Case - Aluminized 11004 best with 2000+ stall and

best with 2000+ stall and gears

75 in Bolt Pattern

Lowers your 1967-1972 GM A-body 1-inch

1967-1970 Pontiac Parisienne

Flowmaster Pro Series Muffler - 3" Inlet, 3" Outlet - 6" D x 16" L Case - Aluminized 11004 best with 2000+ stall andThe Flowmaster PRO Series line of racing silencers will make you a believer. Developed with many of the top race engine builders and race teams around the country. The PRO series silencers feature a dramatic reduction of sound over open headers, without sacrificing your hard earned horsepower and torque. Race proven performance that will put you at the front of the pack. . quietly! The Pro Series mufflers work on all applications ranging from street