This Pontiac GTO just wrapped up a long road trip, making now the perfect time to fix its issues and install some upgrades.

This 2006 Pontiac GTO with 112,850 miles is a heavily modified, 6-speed manual muscle car—perfect for enthusiasts seeking a tuned, high-performance ride in South Carolina.

In the May '06 issue, we upgraded the clutch to a grippy Spec Stage 3 with a new flywheel on our supercharged '04 GTO, removing any doubt about the clutch system handling the increase in power. So now ...

This forgotten American performance coupe secretly produced 400 horsepower, delivering muscle car speed without the styling ...