Proton GEN2 and PESONA Rocker Cover

As we know starting from the Proton GEN2, Proton had change their engine to CAMPRO S4PH engine, and than it continue use on their fleet after the GEN2 such as PESONA, SAGA BLM and EXORA.

Although the engine is in the same family, which their cylinder head gasket design are same, but there are design changes on the rocker cover and intake manifold side for different model, once they said that it may be diffrentiate from those CAMPRO and CAMPRO-CPS.

As Proton GEN2 using the fire made rocker cover, which I think is much lighter, it is unknown why the rocker cover is change to aluminium type for PESONA.