@punk,
NGK laser Iridiums are also fine, but Denso is one step superior than NGK, use then know, changing interval is 30000 maximum for Iridium plugs.
@shorty_bari,
You can find coils from Ahad or Auto2000 at montgamry road, price not know but they are expensive, MSD coils are specially build for racing engines at least V6 or V8, i think it will be a costly project.
@innocent_devil33,
No need for intake its also expensive, just change your plugs to Denso W16EXU,or W20EXU cost you around 300 for 3 plugs.
@accord7362,
Actually company recommend gap size & heat range so in that way you can choose better company like Bosch or Denso.