Exhaust muffler

[Hawker19]

Looking to change my stock exhaust to something more throaty. Wondering what everyone has done?  Looking at the Dynomax or Borla. I have a 2019 TrailBoss LT with 5.3. Also does anyone know what the screens are for in the tailpipes?

[newdude]

Might want to try the T1 section of the forum.  https://www.gm-trucks.com/forums/forum/247-20192020-engine-driveline-exhaust/

 

Old body HD section won't be of much use.