Only 68 Callaways were built in 1990. This car has a total of 7,300 miles. Option B2K was the Callaway conversion approved by General Motors and it cost $29,895.00 which made the price of this car $69,343.00. The twin turbpcharged motor produces 390 H.P. and an amazing 570 lb.ft. of torque. This car is probably the best preserved Callaway in existence.