1970 Other Lincoln Models which way?

It's been s damn long I forgot myself lol. It will ave to come out from the dash. If I remember correctly there may be clips that you remove around the heater that will let you split the box and remove the heater core. Otherwise you 'll have to remove the whole heater from the dash and that requires blowing the charge of a/c. You will have to remove quite a bitof stuff from the dash like hoses an dprobably glove box to take this out.