[4onthefloor]

Im running "Vintage" 4 bolt headers with round Thrush Header mufflers-in my SBC powered '67 firebird-No tail pipes just running under the car old school Style And It sounds mellow at idle but when you Crack it open they Bark-its a Sound that no other muffler makes...Flowmaster cackle&pop-Chambered systems also "Clap"-I ran "HUSHTHRUSH" mufflers on same car & they Sounded Throaty-Quiter than the Round Thrush but When you get on the car-they Make Noise-They are perfect for what you want-As the Round Versions may be TOO loud for your taste-with a Drop top-I also ran a chambered "turbo tube " muffler system on a BBC car & it Clapped at WOT..It got aggravating to me Fast-Same sound as glasspacks but more money..