In 1966 engine displacement was boosted to the 1.6 liters and power output to 96 HP. This new model was given the new designation SP(L) 311. The 1600 was produced until the end of production in April 1970.
The 2000 roadster SR(L) 311 was intrduced as a half-year model in 1967 Powered by the U-20 single overhead cam engine, in stock configuration of twin SU type carburetors it produced 135 HP. An optional version with twin Solex carburetors produced 150 HP. The 2000 was also produced until 1970 when the Roadster was superceded by the 240-Z.