Hello,
One way to use FTM timers with S32K1 blocks is to use the FTM PWM Config and to disable all the PWM Channels.

Then, enable the reload interrupt from the "Reload Settings" tab.

Finally, to handle the interrupt, the "FTM_Ovf_Reload_ISR" block can be used .

If this method doesn't suit you, there are also other timers available:
- Periodic_Interrupt_Timer (can be found in "Utility Blocks" category).
- LPTMR (can be found in "Core and System Blocks/LPTMR Blocks")
Best regards,
Sorin Bancila