Where to get heater core and blower motor?

I had to have my bottom radiator hose moved from the left to right, when I removed the 273 outta the 66 and put the 340 in.. dude was old School, and Bad... in 2010 or so, it was 40 bucks. . Real Wizard, learned from his PA, had this old evil looking vat in the middle of his shop, a Old building, by the ship yards, he made his cash off the semi's and punk kids w/ junk. I dealt w/ him a few times, and always sent biz his way, found out later he was known amongst the crowd. Mileys...7th Ave, east of Ybor, he'd light a cigar w/ his brazing torch, and tell ya old Mopar stories. I found him by accident, but if he didn't like ya, or your junk, he'd send ya. I seen him do it. Asked him why, once, after he'd politely turned down a guy, said, " Man, I don't need to do that, and these new parts are such thin junk...he loved copper and brass... Shops gone now.. hope he's ok..
Yep, we had a similar shop in Yonkers NY, without the cool guy smoking his cigar of course.
It was called Saw Mill Radiator. Same concrete vat in the center of the shop, they would braise anything, and as a kid, I use to like to watch when they dipped the radiator in the acid. Theyre gone now. I found out they regulated him out of business, too many chemicals in the open air.
I'm sure it wasn't the healthiest environment, but sad to see them go.
Now we're stuck with plastic and aluminum radiators and heater cores.