The Cutlass Calais was one of the first cars to feature Oldsmobile's New for '90 Quad4 H.O. Based on the normal Quad4 which debuted in 1987. The H.O. featured Higher compression (10:1) revised cylinder heads, new manifolds and Camshafts. The Calais International was the luxury touring version of the Calais and featured a 10-piece aero kit and every factory option. Of the approximately 2000 Internationals Produced only 604 were 2-door H.O. five speeds. My car is one of those 604.