The scoops in the lower front fenders are functional and look great too. They exhaust hot air from the engine compartment, which flows out more freely courtesy of those four horizontally spaced openings in the Callaway nose.
    Randy tells us his car is the sole Grand Sport Callaway built with the aero body and the Supernatural LT4. He has seen one other Grand Sport with a Callaway body. The owner did the body installation.
    Callaway has built a total of three LT4 Supernaturals, which are not any more powerful than the LT1s with the same modifications. Callaway Cars had 400 and 435 horsepower Supernaturals at the start of the ‘96 model year. Later, the 435 became the 450, which is 450 horsepower whether the starting point is an LT1 or an LT4.
    Callaway maintained the original look of the Grand Sport engine, which is unique