Cheap, Good Not Too Loud Mufflers for your Single or Dual Exhaust A Body

I remember drilling a cross hole in the 3 inch Dia. header extensions . Stuff a big ball of coarse steel wool in and slide the pin across. That was The cheapest for me. Right before a race pull the pin a stab the throttle. Then have a friend pick up the balls to be reinstalled .

A very popular thing to do on Corvettes with header side pipes. and fender well headers. Back when Sunoco 260 was 32.9 cents a gallon and we were all waiting for our draft number to be picked .