Spark Plug for 4AGE BT 20v engine is IK20.
For further information, u may refer this website
http://www.globaldenso.com/en/products/aftermarket/plug/basic_knowledge/heatrange/index.html
Just worn out my brakes today at sepang open track day! Wow... damn fast gone, may I know whats the recommended brake pads for track use, which can last long as well as works better than stock vr4 pads?