M Matt Z New member Aug 3, 2009 #1 I currently have a Flowmaster Super 40 muffler on my '98 Grand Cherokee Limited. I was wondering what headers are and if it would be worth my time to install them?
I currently have a Flowmaster Super 40 muffler on my '98 Grand Cherokee Limited. I was wondering what headers are and if it would be worth my time to install them?
