Now that we're well into the third year of production for the S197 Mustang, the aftermarket and legions of owners have had plenty of time to figure out that these cars respond quite well to bolt-on ...

AtVettewe love bolt-on performance parts. Maybe it's the nearly instant gratification they provide or it could be that they are easy enough for a caveman, or editor, to install. In any event, they are ...

Back when this '99 Trans Am was nearly new, the original owner installed a set of mid-length headers that served the Bird well, but the time has come for a change. There is a small hole in one of the ...

Conventional wisdom has it that long-tube headers offer more performance than short-tube headers, albeit at more expense and installation effort. We decided to test that conventional wisdom and share ...

On a 5.7 HEMI, shorty headers promise easy bolt-on power without turning your daily driver into a race-only project. The real question is how much horsepower they actually add compared with stock ...