Which line is trans cooler return line on c4?

[palerider94]

Putting a trans cooler in. Was planning to route thru return trans cooler line on radiator. Can anyone tell me which port is the return the line on radiator. Thanks

 

[10secgoal]

Never paid attention to it honestly. Just needs to get in and out.

 

[brianj5600]

The front one is out from the pump. The return is the rear port.

 

[palerider94]

Thanks - Appreciate it.