Jason B, do you have any dyno charts that show a 20 horse increase with only a Gibson exhaust? I've had exhaust systems on every truck/suv I've ever owned; the last system being a Corsa cat back. For years I bought into the advertising regarding significant horsepower gains resulting from the addition of xyz exhaust system, and never saw such gains myself. In fact on a few trucks I owned years ago, I actually lost low end grunt by adding a cat back system, and compromised my off the line acceleration. I'll admit, I didn't know much about the importance of pipe diameter then and now realize that I had reduced my backpressure to much. However, even on my best applications, like my recent Corsa system, I only saw 2 more horses on the dyno which could have been attributable to a number of other factors.
I say, If you like the sound of an aftermarket system, then go for it, otherwise, your performance money is better spent elsewhere.
