Long story short my heater core went so I go under the dash drop the the plastic cover and notice some coolant on it. Now my question is what part needs to come out for the heater core? I searched but couldn't come up with any pics of what to remove :?

Drain the coolant
Pull the heater hoses off the core (Sears tool like you saw at NEBF )
If you have a HVAC programmer move it off to the side.
Remove the plastic cover next to the HVAC programmer, that'* your heater box cover.

I unbolted the cover but I can't wiggle it free the vents are in the way

same thing happened to me, I had to pull the dash.

search on Bob Dillion. I think he did a core..or maybe it was Bill Buttermore. That should say if you have to pull the dash. It'* easy if you do..