Larry's got the same setup I have. From what I gathered looking at another 73 today, the rear line just goes straight down, turns back and follows the frame rail until it hits the crossmember, where it turns again and goes through the oblong hole. I got most of it bent up and routed today. Will post pics when it's done.
Naturally, my rear diff tee hose has been cut and the bracket that holds the end to the rear seat wall is MIA.
Thanks guys.