Hello Gents, a follow up to my last post. I ended up buying the Magnaflow 19534 | Chevrolet Silverado | GMC Sierra | 6.2L with factory duals only | Direct Fit Muffler Replacement Kit with No Drone Technology from Hottexhaust.com (MagnaFlow). It was $545 shipped. It did not fit exactly per...
Hello fellow ZR2 owners....... Looking for your advice. My situation: The previous owner of my ZR2 installed a MagnaFlow muffler and removed the flapper. The truck has a VERY annoying drone at mid to highway speeds and it is bad enough, that a lot of times Siri cannot understand what I say...