And that is not the correct thermostat outlet, that one has the 18RGU layout and would be very lucky to clear the TPS.
The 18RGEU ones point to the left of the bolt hole and have a lowered middle section profile.
The thermostat housing itsself is the rare, must have part. There is a datsun water outlet that is much closer to the 18RGEU genuine part that is $13 from SuperCheap.
If you offered these parts for $250 plus postage, I would think about buying it.
I don't intend to be mean here and I wish you the best of luck with your sale.