It's hard to go by deluxe or super deluxe as this engine came out of a '55 P26. When we got it, the small house on the water pump went to the heater and the pipe at the back of the head, passenger side also went to the heater. There is also a whole on the side of the head, diver side that had a fitting but the fitting was completely clogged and no hose on it.
Why yes, there is small bump on the front just behind the water pump. What should I make of that? If I change out the thermostat housing and add the elbow, will it change anything negatively? Will it change the type of thermostat I have to buy?
As far as the heater goes, not sure yet we will put the original back in. We may upgrade to heat and cooling. How well did these old heaters work on really cold days?