Both rigs in pic are for sale! White is a 2013 388 525 Cummins Black is a 2007 379 550 cat tuned to 600. Under 600 hrs on motor rebuild. Can prove work also. Both rigs are serviced and ready for the road. Need nothing to my knowledge. Both have 18 speeds full lock diffs. Please call me for the details to much to type. New truck is ready so these can go. Only reason is I replaced with a 2024. And only need one rig these days.