Today I pulled the rest of he items out of the engine bay. And I mean everything.
As I will be changing/upgrading the wiring, A/C-heat, gear selector, and possibly the brake booster and master cylinder there was no reason to keep anything intact. Since I don't want to pull the center console out yet I just used a saws all and cut the heater core connections flush.
A little more rust than I originally thought. I believe the firewall insulation was trapping water. Going to take a few more patches.
Here is a pic at that point