Not as easy as as it sounds
The installation was pretty straight forward. The three sections on the drivers side were a pain in the back side to get lined up properly(which they still aren't)In order for the passenger and driver side to be equidistant from the truck centerline and be level the drivers side actually touches the spare tire. As a result the drivers side exhaust pipe hangs about an inch lower than the passenger side to give me clearance from the spare.
Magnaflow Stainless muffler
I narrowed down the list of mufflers to two (2) for my Ford 460. The first was a Gibson MWA. Nice muffler - but too loud. I settled for the Magnaflow. Once the exhaust was installed with a rear-exit tailpipe, the 3"in/3" out centered muffler had a low-rumble with no indication of resonance inside the cab, even while downshifting from a higher rpm range.