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I went with Stainless Works w/cats plus Solo Mach XC cat back in my wife's 2013 SS convertible. Recently, I installed Stainless Works w/cats but kept the NPP stock exhaust cat back in my 2014 ZL1 (w/ mild to wild switch). High quality and lifetime warranty. All purchased from APEX.
Very pleased with both cars. I also installed CAI intake, APEX Catch Can plus VMAX ported TB. My intention was to give my engine optimum Air/Fuel in and Exhaust out. You will need a tune.
Marcus
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