Those are my thoughts also... I followed Sky's poorly worded instructions to a T and I found that to also to be concerning. I emailed them voicing concerns, seeing that with the provided measurements given in their 3 sentences of install instructions that it wasn't quite right looking. So we'll see what they say.
I have the same kit on my 7.3 Bronco, and ended up putting the front hanger a few inches further than they instructed. I know the super duty springs are also longer than the OBS ones.