This is the first NON-Cummins diesel I've owned. I just bought a vehicle with a 1987 International 6.9L naturally aspirated diesel. No one seems to be able to tell me where ALL the big 1-1/2" dia BLOCK freeze plugs are located. I found three on either side including the block heater. The dealer ( Archway St.Louis) says they come in packs of (7) seven but cant/wont tell me where the other one goes???? snow and ice out right now and I dont want to have crawl under there to pull the tranny/clutch/flywheel on a HUNCH that there might be one or more behind the flywheel. I'm new to this blogging stuff and so dont know much about posting and all. thanx in advance. espiritusengineering@yahoo.com