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
i saw in japanese magazine "Option", lots of body kit for ER34,
some can bold on become wide body, just change the front bonnet, front bumper, and bold on rear mudguard, a bit look like BNR34,
any 1 interesting to...