Heater core is busted once again, I had a radiator shop repair it for 60 bucks a couple years ago, now its leaking again. Where is the cheapest place to get a replacement? On line or a local dealer?
Pull it out and take it in to your local auto parts store to match up. Just buy a new one. I replaced my dual port several years ago and also made a homemade heater with one. I think the core is a '69 Ford van for the dual. Don't know for the triple. They're like $35.