How to take heater core out on 2001 Mercury Grand Marquis

The heater core leak

Asked by for the 2001 Mercury Grand Marquis
full dash removal to acess the heater core. pays 6.6 hours at a shop and if you have no expierence, we reccomend letting a shop do it for you.

I have taken out a heater core, but with out air bag. Would just disconnecting air bag be all that I need to do different?