The 1966 Pontiac GTO did not reinvent the muscle car so much as it sharpened it, turning a rebellious idea into a polished, ...

The Goat was running an internally untouched LS1 that was still spewing gases through the stock exhaust manifolds and catalytic converters. Before even thinking of pulling a valve cover, we wanted to ...

With bolt-ons including Stainless Works headers, our 2005 GTO project previously made 375.9 hp and 372.7 lb-ft on SLP's Superflow dyno. Then Stainless Works bolted up its new 3-inch exhaust system at ...

The 1966 Pontiac GTO sits at a rare intersection of volume production, serious performance, and enduring collector demand. Enthusiasts treat it as a benchmark for the muscle car era, and current ...