That cable housing end is quite a bit different than what I've seen on AD trucks and had made for mine. Here's a photo of the the passenger side on my '47. I've also included a shot of my new cables prior to installation. They were made by
Madison Power Systems. I looked at several parking brake cables from a number of vendors and it appears that all of them have the short metal cable housing end. Perhaps, you can put the metal cable housing end in the clamp on your frame rail and obtain some threaded cable adjustment? Just a thought...........
I'll send you a PM with my phone number, feel free to give me a shout!