hey looking for a muffler barrel to quiet down my n/a modified altezza. it presently has a 5zigen barrel (fire ball)2.5''inlet-2.5'' outlet same as exhaust size. real raspy. this thing can get irritating after everyday driving. the exhaust is flow tested i believe so i wouldn't like to lose anything with a substitute barrel. any advice to resolve this would be great. oh yeah the 5zigen would be up for sale once problem solved.
