If the sound isn’t all there for you, choose the muffler you want to use and install it. The kit can come without mufflers. FWIW, they performed very well on the Engine Masters show.
Dynomax mufflers are a little quieter and have more low tone.
Hooker Aero Chanbers are about the same with an exhaust note that is a little raspy or ratty muscle sound.
The flow through ultra flows provide the best flow rates and are pretty darn nice sounding. Even though there a glass pack type of muffler, they don’t sound like glass packs.
Below is another old video with Hooker Aero Chambers on a low compression 400B engine and headers. 2-1/2 exhaust. Another stone cold engine.
