How to remove the heater on a 964?

Heater roadblock.
My goal is to remove the last piece of the AC which is the giant radiator inside the heater housing. So far, I removed the gas tank, the firewall, the fuse box and still can't get the heater out.
Were 964's built around the heater housing????
What am I missing here?
Help !!!

Were 964's built around the heater housing????

Help !!!