Hi,
You can get the demo through the link and get more resources of S32K3 eco-system.
https://www.nxp.com/webapp/swlicensing/sso/downloadSoftware.sp?catid=SW32K3-STDSW-D
Automotive SW - S32K3 - HSE Firmware <----------------- This one
Automotive SW - S32K3 - Inter-Platform Communication Framework
Automotive SW - S32K3 - Model-Based Design Toolbox
Automotive SW - S32K3 - Real-Time Drivers for Cortex-M
Automotive SW - S32K3 - S32 Design Studio
Automotive SW - S32K3 - S32 FreeMASTER
Automotive SW - S32K3 - Safety Peripheral Drivers (SPD)
Automotive SW - SBC/PMIC Real Time Drivers
Automotive SW - EB tresos Studio / AUTOSAR Configuration Tool
Cheers
Oliver