the line at the front of trans is pressure line out to rad.

wont matter which side the line goes to on the rad,the other rad line to cooler and back to rear line on the 727.

***if you are in sub 0* weather you would run to cooler then to rad back to trans. this keeps the fluid up to temp in the freezing cold.

use the biggest cooler you can mount or 2 smaller ones in tandom. if they are not in front of rad,and say in a fender well,you want to add a fan to them for airflow.