Not in the UK for example... they have the one side plugged up, and just have four spark plugs/wires along with a different distributor.
Post Merge: 07:18:19 AM / 15-Apr-12
But I just realized what you meant... all the CA SINGLE can motors in SOME markets... CA20E and CA18ET. In some markets, one side of the head has the holes plugged up and they only run four plugs. The second set of plugs in the 8-plug versions of the CA SOHC engines is an emissions thing, not a performance feature.