True 5.9 to 6.7 swap. Engine is a 2019 6.7 with 2800 miles. Engine was bought from Sams riverside https://www.samsriverside.com/.
I retained the 6.7 CM2450B, injectors, CP4.2 (Swapped to S&S CP3), wiring harness. Made a custom harness and controller that bridges the engine to my vehicle allowing the engine to run in my 3rd gen.