You want one of these, http://www.acdelete.com/pages/82-92_F-body.htm
I just took out everything, the system had drained itself, and most the wiring just stays the same,
the heater pipes you don´t need to touch nor drain the system.
I did try cutting the old ac box down but they are very fragile and it´s looked like shit.
It´s a good thing to look under the ac box as it´s a place water accumulates and eats through the firewall.
Before.
A touch of filler and paint.
Most recent pic, you won´t believe the space you gain.
