Looking for a part

So after buying some new weatherstripping, I found out that that was only part of the issue with my windows not sealing. I went after the doors yesterday to try to do some window adjusting and alignment and got it a little better, but I found that someone in the past had already been in there and replaced some stuff, namely the stud that locates the bottom of the front window channel. I found the part number in the old manuals, but I'm not coming up with anything useful via internet searches and am wondering if anyone knows where to find these. I know I can probably just make something similar and already have an idea in mind for what to do, but if I can get the "right" piece I might want to swap it out at some point. The part is listed as P/N 23-64-40, shown below:
View attachment 1716340064
It's just a stud with a hex on the top, but it's also got a ring at the bottom for the nut to tighten against. Curious if anyone out there knows of any vendors that still list stuff with old Dodge part numbers.
Doesn't anyone use a Parts wanted ad any more?