Alot of resto parts are genuine Ford. I ordered the Heater hose kit and restrictor and they were genuine Motorcraft Hoses. I would order their Heater core kit with hoses, core and restrictor. It's a good deal.

 

 

I've heard that Ford discontinued the cores, and 50resto no longer lists their premium core as being made by Ford.

I put a readyaire core in my car, and I'm hoping for the best. It seemed to be of at least OEM quality. I also made a restrictor plug out of a chunk of 304 stainless. I believe it was 5/8" OD with a 3/8" ID hole gun drilled in it.

 

the autozone core in my 67's lasted 5+ years...but if you must the easiest would probably be a local ford dealership.

 

My Readyaire is also an Autozone core, but I don't think it was their bottom of the line. I've used other Readyaire products in the past with 0 problems.

 

i don't think they discontinued them...
i bought a new one from my local ford dealer over the summer. they had to order it in though.
not super cheap either.