Superformance kit car transmission upgrades are a vital enhancement for builders who demand both authenticity and performance from their replica vehicles. Whether you’re assembling a Cobra MkIII, GT40, or Daytona Coupe, the transmission you choose significantly influences how the car handles, shifts, and responds under load. Superformance vehicles are known for their period-correct design combined with modern engineering excellence, and upgrading the transmission is one of the best ways to optimize both drivability and power delivery. The right transmission not only complements your engine’s output but also improves fuel efficiency, acceleration, and overall control. From classic 5-speed manuals to performance-rated modern automatics, a well-matched transmission upgrade ensures your Superformance kit car performs as impressively as it looks.