I'm not sure what type of sensors the JPI systems utilize, but, the CHTs will work if they're a type J thermocouple. The EGTs will work if they're type K thermocouples.
The CHT is type K
https://www.aircraftspruce.com/catalog/inpages/bayonetkit.php
The EGT is type K
https://www.aircraftspruce.com/catalog/inpages/unkprobe.php