The paper work that came with my afr 220 heads said to start with autolite ar3910 plugs so I went to the local parts store but they were not in stock. They crossed it over to ngk v power 9 (R5672A-9). this is a non resistor plug.
Anyone have it cause problems with msd boxes or cd/radio?I have a digital 6 box.
Does anyone have a book to see if there is a resistor version or ar 3910? or equivalent.