To say that our 2005 GTO is one bad mofo would be an understatement. Starting out with an incredibly stock yet strong-running '05 LS2, our Project Head Poncho has proven to be a consistent and ...

Back in our March '06 issue, we installed a bevy of bolt-ons to our project 2005 GTO for a 34 rear-wheel horsepower gain. Included in that story was a quality set of Stainless Works' 1.75-inch headers ...

In our last installment, we tackled the installation of Stainless Works' gorgeous 1 3/4-inch primary long-tube headers, but what good are these great headers if we choke them up with the stock exhaust ...

When performed correctly on any car that needs them, exhaust upgrades accomplish three things: Your car will be quicker, have an authoritative tone, and run more efficiently. With those benefits in ...