Unless they've changed something, it was always my understanding that the knuckles were '76/'77 Bronco and not one of the other disc brake versions.
In fact we bugged them a few years ago about using another style as their model, such as full size, or better yet the high-arm F150 Supercab version.
But no dice at the time.
Still, it's a fantastic product. And if you are not stuck on Ford disc brakes (like I usually am) then one of the other Dana 44 models could still work. You'd have something from say a GM product, with flat tops for high-steer arms if you want, with the standard 6-bolt spindle flanges and could use the common GM brakes.
For awhile the Bronco knuckles didn't even have the flat top I thought, but it looks like they all do now.
And even though they don't look like it in the single images from the side, if you look at the pair here, kit #8711 where the image is from an angle, you can see the outward curve of the arms.
https://www.wildhorses4x4.com/category/s?keyword=reid+racing
Sure looks like '76/'77 EB style to me.
Paul