Two thermostats

[cartoonstrips]

I have a thermostat in my cylinder head water outlet elbow of my 1976, the thermostat works as I can feel the top hose go from cold to hot when it opens. The radiator bottom hose went right to my water pump.
Purchased the parts to convert it to the two way thermostat which is the way I've been recommended to do - and am wondering if I should take out the thermostat in the head?
Also wondering why my Haynes manual says that my present set-up is the way it should be on 1598 and 1755 engines (mine is 1755)
All ready to put the cooling parts back together after a new timing belt and water pump have been installed.

Thanks.

Here is a picture before I started

[johndemar]

The previous owner modified the cooling system by putting the thermostat in the head. It does reduce the clutter of hoses on the right side of the block but is not original for a 76. If you put in the stock thermostat that comes out of the water pump, there is no need for the one in the head. Are you located where you don't need to be concerned about emissions? Because they removed all of those items as well. Good luck with the project.

[cartoonstrips]

Thanks -
I'm in NW Ohio so I think I'm okay with the emissions modifications.
Half the time I have spent working on this car was trying to figure out what the previous owner(s) have changed over the years; the wiring was and still is the worst thing to try to determine what is original and what has been removed, changed or added.