^between 4-5k.
The plugs J.z suggested are for a 1300cc Liana. If u have one of those Japanese manual ones that are 1600cc, then you have an m16a engine. ALthough i think IK20s apply to both m13a and m16a.
Personally, I have noted very little difference between the denso and ngk, but i prefer denso ik20 over the ngk ones.