you can't get the origional injectors anymore, they are no longer being furnished by the supplier. When you order new injectors you are referred to get the update kit. (p/n:4232744 for GM 2.4L and p/n:4232746 for GM 4.3L) as per the service gram EJ00005R02H.
dated 02/08/2019.

a note in the gram gives a descripton:
"These kits contain the parts to remove the older style injectors and replace with the newer style of this component. These kits also remove the injector driver module, which is not needed with the newer style injectors and replaces it with a connector to make the harness connections for injector circuits. A new ECU file is required to be loaded to the ECU using the S3000 Flash Wizard. See Gram LA00049 for usage of this software to load the new ECU file. The new ECU file is available for download from Hypass.
Drawing and installation instructions come with the kit. If further information on the installation is required, contact Service Engineering through Contact Management"

So all in all this is not something you can do yourself, the hyster dealer will have to do this.