I also have to say that Classic Parts
https://www.classicparts.com/1967-19...departments/7/ has been good to deal with over the years for 1969 and 1982 C10 parts. I've bought everything from bumpers to gauges from them. On one occasion when I had a question about a part, I was put in touch with a tech guy (or a really sharp sales guy). He sounded like he actually had experience installing that part on a truck like mine.
A few months ago I ordered several instrument panel items from them, for both 67-72 and square body. Their prices were the same or lower than other vendors, and everything on my list was in stock! So, one order and one shipping charge got me everything.
My only criticism was it took a few business days for the in-stock parts to ship, but I guess that's not unusual in these days of companies not being able to hire enough workers.