Best bet is to ask the guy you bought it from.
most kits you have to load your stock file and send it to them for modification before you can add the nee one to your truck.
Just did mine a couple days ago. Bought it from Ecodiesels of Canada. It’s a package stage 2 and trans tune from MRTuning and hard parts from T&S Speed shop.
Basic instructions for the tuning part came by email weren’t too hard to get through even as a tuner virgin (all my other tuning involved...