Hi All i have put a nissan c20 motor out of a Nissan Vanette import into a Nissan Urvan 1984 and have gain atleast an extra 30 percent extra power i wish to modify the motor to gain more power headers etc any suggestions would be a good i know it is only a 9 seater van but i want to do it up body as well as motor its currently faster than some cars now with the replacement motor thanks Alan Forgot to mention that it has Eight Spark Plugs