I have always liked the sound of headers on a V8, but I know in the newer cars today, the exhaust manifolds are very good on the flow. Has anyone had any luck with headers and how easy are they to install? I work at a car dealership in the service department, but not a tech(service advisor). I have done many add on to previous cars, just wondering how hard to install and what it sounds like. I have a 5.4L 2004 FX4

 

pain in the ***, back , eyes, If you do it in the driveway, sound will depend on the mufflers you choose.
get it done at work when no ones looking