It's starting to look like an engine again.
Motorcraft RH34 Thermostat Housing
See the PREVious few dozen captions...
It's worth noting that the only NEW parts on this engine are the gaskets & the timing set. The water pump has a couple thousand miles. Everything else has at least 40Kmi (like the reman long block); some parts have 250Kmi (like the injectors, EGR tube, balancer, oil pan...).