You are right about the position.
The original CSX cars used a Chevy style input and output port. The upper left was attached to the motor and the lower right was attached to the water pump. Many are routed in odd ways from what I have seen first hand. Routing is most direct first and foremost.
See this unmolested FE upper via Mr Maxwell at SAAC31. Lower pipe was typically aluminum piping exiting the lower right radiator and going ~45 degrees across to the water pump.
http://www.clubcobra.com/photopost/s...o=41220&cat=15
Best of luck,
Jeff