BTW - Not sure on the o2 sensors...they may be original as well.
On the Bosch plugs....they were put in just before I bought the car....I'm kind of an old school type guy myself, would rather (and had better luck) running AC Delco's in my 468ci Chevelle than any Bosch or NGK BS that some guys push.
I'm interested to hear your story on the Bosch +4's? I can tell you that I would never pay that kind of $$ for plugs myself....but haven't bothered with them since they were already in there when I bought it.
Thanks again!
