I went and had a shop fab up the Magnaflow 14" (same used on the mufflex) and had them add aluminum prior to all clamps. Same set up as mufflex except with aluminum. Now stainless is a much better material, however I can tell you my last truck had a similar set up and the aluminum was never a problem. With this set up if it is ever a problem you can remove it by using the factory clamps.
Here we go, put the truck up on the ramps and pulled the stock one off, installed the Mufflex in like 30min lmao, this install was almost as easy as my cup holder mod that goes in the Driver door. Was like plug and play. Well I recorded what the 2012 Ram 1500 4.7L single Exhaust with the the mufflex on it and tell you, the recording does not come close to the actual sound this dods18 has, give you an idea of the thunder this thing produces, check out the video how it vibrated due to the low sound vibe this thing gives off. The dods14 must vibrated the carp out everything if this 18 sounds like this.