Ok I am Installing ( 2 ) trans coolers on my street/strip car both are Hayden trans coolers the larger one is 10 x 16 x 3/4 with a 9" electric fan mounted on it this one will be the bottom cooler in front of the Radiator the second one is 5 x 12 x 3/4 and it will sit on top off the bottom one. What I am asking is...

1. Which line is the pressure line coming off the trans I believe its the front one and the back one is the return if I am wrong please tell me.

2. Second should I run the pressure line in the bottom cooler first with the fan or run it to the very top cooler and let it run down and finish in the larger cooler with the fan then back to the transmission..

Thanks for any help.