[TaurusKing]

You do know that the car is assembled around the heater core??? LOL j\k here's a short version down below:
it's not an easy job, got airbags in there too, if the dealer were to do it, I would guess you would probably pay 500-600 dollars minimum, I'm just taking a stab at the price, it's all labor, what's a core cost?? 50 bucks???? If I were you, I would try a small amount of radiator sealer, see if it'll work, if it doesn't then you know what has to be done...


Removal

1. Remove instrument panel and lay it on front seat.

2. Remove A/C evaporator housing as outlined.

3. Remove vacuum source line from heater dash panel seal (18529).

4. Remove heater dash panel seal from heater core tubes (refer to Heater Case Assembly).

5. Remove four heater core access cover retaining screws and remove heater core cover (18B300) from A/C evaporator housing.


Heater Core Access Cover Retaining Screws



6. Lift heater core and seals from A/C evaporator housing.


Installation

1. Transfer three foam core seals to new heater core.

2. Install heater core and seals into A/C evaporator housing.

3. Position heater core cover on A/C evaporator housing. Install four retaining screws.

4. Install heater dash panel seal on heater core tubes.

5. Install vacuum source line through heater dash panel seal.

6. Install A/C evaporator housing into vehicle as outlined.