The way a hot rod’s drivetrain performs is arguably the vehicle’s most important element. In many cases, horsepower, torque, and “what the engine is doing” are the hot topics of most car guys’ ...

UPR Products of Lake Worth, Florida, has been manufacturing upgrade parts for late-model Mustangs for years. When we came across a New-Edge Mustang looking to improve its 60-foot dragstrip times, we ...