Are most of the pics in the thermostat replacement guide of the 4WD? I suspect that this is a picture of the 2WD, because I'm working on a 2WD and I think I have to remove the part circled in red here:

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in order to remove the tstat housing.That hard line leading from the power steering pump is in the way on the 2WD, so I should probably... drain the PS pump and remove it to get access to the tstat? Or ought I be able to remove the housing with that line still in place?