Cooler lines, fluid flow.

[Gnx6]

I'm doing some custom -6 cooler lines front to back on the car to get rid of the old steel lines, my question is, which port on the trans is fluid out and which is fluid in? Is it the top or the bottom? Thanks.

 

[WarWagon]

Upper port is feed out, lower port is feed return.

 

[Gnx6]

Thanks!