Looks like Magnaflow is about to release three systems for the LMM trucks. They will be Particulare Filter-back single exit systems with 4 or 5" tips and then a dual tailpipe system with 4" tips. Finally some aftermarket exhausts for these trucks! :)

I just started another thread about my MBRP install of Cool Duals.
Unfortunately (or fortunately depending on what you like) there will be no sound increase with any filter back system.

I was hoping for at least a little sound :(

I just put on a rbp turbo back and am 100% happy.. Simply put they make good stuff