brake cables,help!

i currently have the big 11" rear brakes off a '72 fury wagon on my '69 dart.along with a 8 3/4. can i use the factory e-brake cables or do i need a different set? any thoughts?

I have the same problem to id be interested to know as well.

I had 10", put 11" on. One (I lost the longer one) worked, bought the longer one from Napa. Going under a subframe connector, the cable from pedal was good, I just needed to make a spacer at one cable, in the swivel, that the rear cables clip into. And this was for a narrowed Dana.
Mock it up, and if the cables are off, show pics. It was pretty simple to fix.