The regulations are designed to balance the desire for technical competition and fast vehicles with the requirement that costs are kept reasonable. Racing is close, and the cars bear some resemblance to production models. standard "aerodynamic package" of spoilers and wings, a front splitter/air dam and side skirts are supplied to the teams of each make. Every car is powered by either a 5.0 L Ford "Windsor" SVO or Chevrolet Aurora race engine which is capable of producing between 620 — 650 bhp of power