727 Trans cooler line. Top or Bottom ??

the radiator has a vertical cooler?

not that it matters much but i'd wan't the trans fluid leaving the cooler at the coolest point.. that would probably be the bottom of the radiator.
Thanks ABJ, we'll take all that in to consideration. Ya it's a alum. radiator and the cooler orifices are,one on top the other on bottom oem was horizontal. After the radiator cooler it will go to a B+m cooler located in front of the radiator it's self. Running a rather loose converter and want to get the heat out. Thanks, D.y