I see they charged 600 for each. Also 400 for the oil cooler. They may have installed the oil cooler after they took the pictures.
Here's the diff cooler on my Z. As you can see. There is lower hose coming of the drain on the diff cover going to the cooler, pump assembly, then the top hose goes back to a port on the diff cover. I can't any extra hoses on either the diff or the tranny that would go to a cooler. The cooler for the manual tranny would be the same. What I'm wondering is. That they attached finned heat sinks on the housings. And are calling that coolers.