Okay, here's the deal. I'm in the middle of converting an '82 245 from diesel to a gas engine car as some of you may know. Part of this conversion requires changing the cars' inside wiring harness which runs mostly behind the dash (I'm also upgrading the engine harness ). Since I have the dash and the wiring harness out and am installing a new heater motor, resistor and switch because I never want to have to go into that again should I go ahead and replace the heater core or would it be just as well to get the old one boiled out? I don't know the condition of the old unit ie: clear and functional or plugged or somewhere in between. I've heard that changing the heater core is one of the worst jobs on these cars and wonder if it's thta bad considering wher I'm at with this. I just really, really, really don't want to have to go in there again. Thanks
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