Installed the Magnaflow O/R X pipe and full 3-inch catback (tamer street version) on the 5.0 last week. Sounds great and picked some pretty damn good power from it.
Run 1 is stock with Roush axle-back. Run 6 adds JLT CAI and BBR tune. Run 9 adds the x pipe and cat back.
The fit on the passenger side kinda sucks and they sent 2.5 inch (instead of 3-inch) clamps in one of the boxes but other than that I'm really happy with it. When the correct clamps come in I'll deal with the fitiment issue.