Hi davidsherman,
Sorry for making your confusing, normally, if just one module, from number 0.
So, to the KE16, it is CAN0.
You also can use the CFG tool to check it, you can find it contains CAN0:

The CFG tool can be downloaded from this link:
www.nxp.com/mcuxpresso
Wish it helps you!
If you still have questions about it, please kindly let me know.
Best Regards,
kerry