Yeh, I'd be concerned about the tire coming in contact with the box on full lock if it were mounted outside the frame.A toyota IFS box could work too. It's reverse but sits on the outside of the frame (giving you a nicer slightly longer drag link with better angles)
edit: looking at your photos, the ifs box may not work either.
As long as it is a forward throw. I'll look into the rodeo box also.Isuzu Rodeo box is really similar to a Toyota IFS box, but it sits on the inside of the frame instead of the outside....
The only thing I'd worry about on the Super Duty box is that they're pretty huge.