Disc brake swap wheel spacers

[Awann99]

I checked that site and they are out of stock. I called and said it would be out until August 6th. I found a set from another site. Would these work for the 65 truck, they are designed for 77-87 Silverado/Sierra 1500s
https://www.roughcountry.com/wheel-spacers-10086.html
I assume they would work because 60-70 guys use 73-87 1500 4x4 wheels on their disc brake swaps because they will cover a caliper, so the bolt pattern and spacing should be the same.
Thanks