Sounds about right......The headers will give you more performance gain for your money, but will not change the exhaust sound too much. The JoeZ exhaust will make the exhaust noticeably louder/better, and will bring you a performance gain, but not as much as the headers.
The headers alone go for $1,295 and will give you an approx gain of 25 rwhp
~ Average install labor is $500-$600
The exhaust system goes for $1,599 and will give you an approx gain of 20 rwhp..
(more material used to make an exhaust)
~ Average install labor is $100-$150
Combine the two bolt on systems and you are in a very impressive 40-45 rwhp approx. max gains..
These are just some ball park numbers based on various dyno tests using a Dynojet Dyno..
Happy Holidays to All!!!