Russntustin, what cylinder heads do you have? Do they have a "staggered" bolt pattern on the valve covers? If so, they are 265 heads; which don't have water jacketing around the spark plugs. They may/may not have the plug above/between the front two cylinders.
There should also be ports for your sender on either side of the thermostat housing, since this is the only coolant connection between the two banks of cylinders.
