What plugs are interchangable?

Discussion in 'SN95 4.6L Mustang Tech' started by blubullett, Dec 17, 2006.

  1. I have a brand new set of ngk plugs for my 2001 bullitt. Do these plugs fit the earlier non pi heads? What about the 98 doch heads? I was going to give them to a friend but I dont know if the would fit or not.