Thats up to u personal decision. i do not have many left by the way. For power of course it increased 'APEXI' its the name! it fit into all car cos its universal
sorry bro..i am newbie here...and i wan ask something bout my slk...how to open the door cover har?coz only one place i dun know....the mirror handle there how to open har?no screw there leh..coz got some wierd sound...