Where to get heater core and blower motor?

It's Sad.... it really is. Dude lived in Plant City, I'll bet Roy knew of him. Put it like this, I pulled up, in a 20 year old Dodge work truck, asked him if he worked on old radiators, he asked " what's it for", I told him an old Mopar, I was wearing a " nicer " lol shirt w/ a collar, think I was out trying to bid a job, but the first thing he did, was look down at my work boots... don't get me wrong, he knew his game, had some #s cores there, told me some stuff bout that. When he seen I just wanted my old car to run ( without overheating) he was just another Solid Southern Redneck Old School Mopar Muscle Car lover