January 2005. This service bulletin is applicable to mounts 17112, 17113, 81021, 17122, 17142, 17150 and 17145 and is in reference to a design change in the bracket used to mount the vehicle blocker beam in Ford trucks. You can find the full service bulletin here.
This mount is for a 2020+ GMC or Chevy C/K Series K2500, K2500HD, and K3500 Series 4x4 models. It is for EZ Mount plus. Parts List and Installation Instructions
This mount is for a 2019+ GMC or Chevy C/K Series truck and K1500 4x4 models. This can be used with either MDII or EZ Mount Plus CLF kits. Parts List and Installation Instructions