The 190° thermostat would be the right choice.
My 1994 FSM calls out for a 190°. Always use the correct one for the cooling system design wherever possible.
The XFI used a 197°F thermostat. That is likely the "Replacement" you got.
180° is not appropriate. Fuel consumption will be higher, and power lower running at a lower temperature.
The 195° thermostat will likely work just fine.
CJ
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