Going clockwise from the small hose cut off very short on the far left:
1 - Small hose cut short - Return from heater tap.
2 - Long skinny hose - Radiator bypass when thermostat is closed. Connects to 5.
3 - Flange on end of pipe - Main supply to water pump. Bolt to back of pump.
4 - Fat hose cut short - Water outlet from head. Goes to top of radiator.
5 - Long skinny pipe - Radiator bypass when thermostat is closed. Connect to 2.
You'll have to mount the remote thermostat housing somewhere convenient and modify the length and shape of the pipes and hoses to suit. It's not that hard to understand, but just a bit tricky to make it all neat.