Im not sure if it just a dealer auction or a salvage, but there is a huge auction yard off of 500 south in woods cross, out closer to legacy.
My 6.0 came from All Truck.
only 10k miles on it and they were very reasonable on price.
They also let me pull other necessities from the donor truck (harness, electronic throttle peddle, TAC module, etc)
these guys are local and sell wrecks www.getwwa.com