I have found that the OEM plugs are not a bad bet. I have never seen a noteworthy improvement using a "super plug", but I have fixed a problem caused by a "close" cross reference by putting back in the plug called out in the manual, generally a Champion for US built/designed motors and whatever in the overseas built/designed motors.
Use what ever the manufacturer recommends.. I can't tell you how many high performance automotive parts i have removed over the years because they fry the points. More spark isn't always better
Use what ever the manufacturer recommends.. I can't tell you how many high performance automotive parts i have removed over the years because they fry the points. More spark isn't always better