MY BUDDY HAS A 64 CHEVELLE W/ A MILDLY BUILT 350 W/ DUAL GLASS PACKS ON 2 1/4" PIPES ITS PRETTY F*CKING LOUD, BUT WHY NOT JUST GO W/ STRAIGHT PIPES W/ NO MUFFLERS? WHAT'S LOUDER THAT NO MUFFLERS? END THEM JUST BEHIND THE REAR AXLE, MAYBE TURN THEM DOWN AND THEY WILL RUMBLE YOU CAR...