Yea that's true, I wasn't thinking of it that way. But cooler as got to be better and every little bit can help. I didn't get the high dollar one just the standard 20 or so dollar tranny cooler. I have a similar one on my Rodeo and it seems to help. When you're running over size tires and I haven't regeared anything this will help keep things cooler.
If I remember right i think both lines on the radiator have clamps on them. Were you talking about the other side of the lines running back to the tranny?

95.5 Isuzu Rodeo
3.2 Automatic 4x4
High flow cat.
Dynomax muffler
Calmini high flow intake
Independent 4x 3" Body Lift
305/70/R16's Dunlop Mud Rover M/T's
Indy 4x 3" Suspesion Lift