When I heard about exhaust leaks in non-modified ford models I thought of the solution I used to fix my leaks. My leaks were at the connector flanges. Heat and vibration is the enemy of an exhaust system. I had reoccurring leaks and inspection failures. Nothing in the aftermarket retail worked to stop reoccurring leaks. I used a C Flange Bracket. No cutting, no welding. Simply install with longer bolts over existing flange or replace damaged flange with this C Flange Bracket and no leak. I passed my inspection. See for yourself on my video links.

https://m.youtube.com/watch?v=zBdFKlVRh48
https://m.youtube.com/watch?v=c1JYhsl0Pq4
https://m.youtube.com/watch?v=t0eHvcnLqAo