Spark 1:43 Chevrolet Corvette C3 John Paul No. 18 Road Atlanta 1978 Resin Model US046 This Chevrolet Corvette C3 John Paul (No. 18 Road Atlanta 1978) resin model. It is made by Spark & is 1:43 scale (approx. 10cm / 3.9in long). limited edition of 500 pieces worldwide. Comes in a display case.