The center bore size is most concerning and makes me believe someone misled you.
This is my 5x5.5 slot mag and you can see the center is much larger than yours. They generally never made variants of this, I know I didn’t have an option on mine.
Your current blade wheels match the larger center hub too.
Just for peace of mind I would take a wheel off and throw it on to see if it fits over your hubs and then check if it’s the correct bolt pattern.
My van came new with about a 3.5 4' hole in the middle. When I bought new wheels the hole barely fits over the spindle. Either one works. 90 Chev.
I was concerned also as all the newer wheels I was looking at have the same large center bore. At worst, I will have to have a machine shop bore the hole bigger or run a spacer with larger studs. At best, the rims fit. They are 5x5.5 as I have taken a tape measure to the holes and they come out with all the correct measurements. I won't truly know until I remove the wheels but that will be on Saturday.
One thing to also think about is several other vehicles, including newer Tacomas, run a 5x5.5 but they for sure have a larger center bore than a Ford.
At the moment, I have been eyeballing F100 drums with the large pattern and they also show the smaller bore. Once again, I won't really know until I pull the wheels on Saturday.