Looks like I built a solution around the longest length instead of the centroid.
See if this points you in the right direction: Pipe vs Scope Box - Longest.dyn (58.6 KB)
It worked out pretty well for this view:
Based on my experience, I would highly recommend you test your logic thoroughly before deploying it on a live project. I have seen the intersection nodes throw out some random intersections or no intersections because of the pipe orientation, slope, etc.
Good luck!