5.3 v8 monte carlo ss 2006
Joined: Jun 2009
Posts: 707
Wow, old thread!
The only company that makes headers for the LS4 is Doug Thorley. As for the exhaust, if you want a kit, the only company is Magnaflow. You can weld in whatever mufflers you want, or as mention above, put in a cutout. You are probably going to want to remove the resonator in your need for loudness.
The only company that makes headers for the LS4 is Doug Thorley. As for the exhaust, if you want a kit, the only company is Magnaflow. You can weld in whatever mufflers you want, or as mention above, put in a cutout. You are probably going to want to remove the resonator in your need for loudness.
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