MagnaFlow XL Series 4 in. x 9 in. x 14 in. Oval Multi-Chamber Performance Exhaust Muffler 13239

The baffle design really cleans up the drone at highway speeds while still letting the V8 breathe. Bolted right up to my existing pipes with no hassle.

Installed this on my Silverado and the combo of perforated tubing and baffles really cleaned up the drone without killing the low-end growl. No more annoying resonance on the highway, just a solid tone. Exactly the upgrade I was hoping for.

I was skeptical about the reversible reflection design, but the perforated tubing really opens up the exhaust note without that annoying drone. It fit perfectly in my truck's tight space under the bed.