hey guys, i am a proud owner of a 68 cougar. i live in adelaide, south australia. I have joined this group to find out some info on removing my heater core. i have a workshop manual but it doesnt seem to list everything in removing it. my problem in this matter is i cant get the bottom box of the the top of the box. i have removed the clips that hold them together and everything around it. i have removed the firewall plates and rubber and cant find anything else holding them together. As parts for these cars are expensive i dont really want to give it a good pull as you know what will happen! Any info would be great and thank you for taking the time of reading this.