...IF you have bucket seats AND you kept your cross bar that the E-brake cables hook to, may want to try what I did.
I used a brake handle that is in a lot of cars between the bucket seats. (mine came from a Colt but most any will work)
Once I had it bolted in the floor I ran a cable from the rear cross member to the handle. Works like a charm.
http://i140.photobucket.com/albums/r19/LutherParris/52Panel/EmergencyBrake001.jpgIf you want a pic of the handle between the seats I can take one.
Hope this gives you some good ideas.