Anthony, hope this helps - good write-up.
http://www.chevelles.com/forums/showthread.php?t=215679
As far as cables I am surprised nobody seems to be catering this market yet. I believe Ford Explorer and Grand Cherokee cables can do the trick. I am trying to figure out a way to move from foot to hand e-brake that will work while keeping the stock console so may do a left hand e-brake like in the Ferrari Mondial etc, by the driver's door.
You can also modify and utilize newer F-body cables or mix and match. I think you want to keep it in the stock foot brake position correct?
Another option if the goal is parking brake only function (or drag racing - kidding) only is to go hydraulic and a line lock type of approach - non electric. push regular brake pedal. press valve, front or rear parking brake engaged (go front if burnout bent plans
)
Good luck!
Gui