Ford CEO Jim Farley tells the story behind Jay Leno's Mustang GTD. The 815-horsepower supercar was designed to take on Porsche.

The S650 Dark Horse and the S550 Mach 1 go head-to-head. A final verdict is reached after a dramatic crash.

VMP Performance improved its supercharger upgrades for GT500s and Raptors. APEX Predator gear improves airflow, cooling, and horsepower.

Not all camshafts are created equal. Here's a look at what makes a camshaft right for a forced induction application.