parking brake install...HELP ***

i,

I have goten almost all of the old parking brake cable off my 73' 240z and i finally got the propellershaft off too.. The part where i am stuck is the connectors that hold the parking brake cable to the car. there are 4 of them. 2 are next to both rear drums then theres 2 more up inside the tunnel area where the cable gets latched on by the y piece connector. I got the first 2 off next to the wheels but I can get the last 2 inside the tunnel. How do you do it? Is there a special way or tool that you have to use? I got the first 2 out with a screwdriver and a hammer. I cant use that up inside the tunnel.. any ideas would greatly help... I have a week to get this car on the road.

thanks for your time .

steve