2001 GT firewall coolant leak

That looks like the condensate drain for the AC system. Are you sure it is coolant and not condensation? If the heater core were leaking it could drain out of that hole. Does your AC smell like syrup or your defrost fog the windows up more?

that would be your heater core. Its a little radiator that warms your heart in winter and pisses you off in summer. Parts are cheap compared to the hours of labor to replace. Sorry dude.

yeap

heatercore.

i replaced mine in my old '01 gt. took about 8 hours or so. sucked at the time, but its really not as bad as people make it out to be. you have to pull the whole dash out though.

Sorry to hear this. I had that happen on my 85 Capri. If I had not had A/C it is a pretty easy fix. With A/C it took me all day. You basically have to drop
the steering column to allow you to remove the dash so you can get to the
heater core box. You also need to disconnect your AC as it goes into this
same box. This is all assuming Ford hasn't changed things. Back in my 85 the heater core and evaporator core are in the same box which has the drain line at the bottom. It is a real pain in the butt to get it all out. Replacing the core is pretty simple, but you should clean the inside of the box of excess coolant.
Putting it back together is the reverse of taking it apart. Good luck.