This Mitsubishi Galant 1.8 GDi have a very special rocker cover design, this is in the Galant EA1A and EC1A model, the rocker cover for 4G93 DOHC normally have 3 curve, 2 at one side and 1 at the other end, but this design have 4 curve with 2 curve at each side.
The plug seal at the center of the rocker cover also different from the design for those rocker cover that have curve, which normally using 4pcs separate plug seal, this design of plug seal normally is use on the rocker cover with no curve at both sides, which can be found in Pajero IO DOHC.