West coast custom mirror help needed

[1967-C30]

I’m new to the form so I hope I’m asking this in the right area.

I’ve got a 1967 C30 with a car hauler flatbed. Right now it’s got the smaller mirrors on it and I would like to get a set of the west coast custom hauler mirrors. I found a truck for sale in my area that has them, but the mirrors by themselves are not for sale. I was able to take the measurements off of them for future reference. Now I found another set, but they are off of a newer dodge and the same measurements are slightly different by a few inches. Does anyone know if they are a somewhat universal set of mirrors between different manufacturers? There seems to be a lot of adjustment in them, but I really hate to try make a deal on them and then have it be a waste of money and time. I appreciate any help you can provide in getting these mirrors figured out or a set found that will work properly.

For reference I’ve attached a picture of the set off mirrors I got my measurements from.

Thanks,