Tailpipes with RMS Street-Lynx and Dana 60

I have a question for anyone running an RMS Street-Lynx triangulated 4-Link suspension with a Dana 60 or anyone familiar with this configuration. The RMS documentation clearly states "Dana 60 will not allow tailpipes". However, the article at the bottom clearly shows a Dart running a Street-Lynx 4-Link with a Dana 60 and TTI tail pipes. So, is there any hope that I'll be able to run 2.5" tailpipes with a Street-Lynx 4-Link and a Dana 60? Any info would be much appreciated.

http://www.streetlegaltv.com/featur...gineering-this-dart-has-what-it-takes-to-win/