Just curious about which spark plugs you are using for the pro-action heads. Namely iron heads. I could not find any champion V59C plugs locally but have a set of AC Delco Rapid Fire #2. Thanks - John

I am using autolite 26's, since everybody seems to have quite carrying the ac-delco r44's. The champion plugs that they recommend is a race plug, and if I remember correctly it has a very cold heat range.