napa couldnt get bp5efs or any non resistor NGKs at all

can i use this

http://www.sparkplugs.com/results_app.asp?productTypeID=1&AAIA=1193846


NGK IX iridium 7397 TR5IX .030"


Arthur, what would be one heat range up? I have oil control issues and a + hotter plug would fix alot of that.

NGK iridium or regular? or no difference?

thanks