How big is the transmission circuit in the radiator?

[Ether-D]

In a m20b25 e30 auto, the radiator has 2 extra bungs for transmission cooling lines. How much of the radiator does this use? Does it have lower engine coolant capacity than the 5-speed version because of this?

I run a 5-speed, but I have a rad from an auto in the shop, and I thought I might be able to use that second radiator circuit to cool something. If I ever obtained something that needed to be cooled, that is.

Thanks in advance for your helps.
Jacob

[Ether-D]

I guess no one knows. After examining mine for a bit, it seems to be very small and perhaps only built into the one side, not even using the main fins. It could do a very small job if needed. Not the one I'm hiring for.