Muffler for 4 cyl based ford Home › Forums › General Discussion › Muffler for 4 cyl based ford › Muffler for 4 cyl based ford February 11, 2009 at 10:09 am #238063 Mark HendricksonParticipant @pink-mg Hey Rob, this stuff is chopper gun fiberglass…a Dremel tool would work. Maybe even an Exacto Blade!
