Stock snail, stock DP, hacked about 8" in front of where the muffler was.
The Magnaflow on my christmas list is a 3.5" DP and 4" straight back. My tuner said to stick with a 3.5" DP because of the snail, and that 4" is plenty for the 7.3s.
Granted, removing the muffler reduced the backpressure, but it is a pretty popular mod for these… right?