I have A 1988 Oldmobile 98 needs a heater core on 1990 Oldsmobile 98

I have A 1988 Oldmobile 98 needs a heater core does the heater core comeout from the inside or outside of the car

Asked by for the 1990 Oldsmobile 98
I have A 1988 Oldmobile 98 needs a heater core does the heater core comeout from the inside or outside of the car
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