Oh dear. Surely because a full JAR IR in the US is impossible, you are doing your ICAO FAA IR in the US, then getting in converted in JAR-land? In the case of NAC, it indicates so on their
website.
AIUI you must check that the Spainish FI course involves spinning. There are posts on this over in the Wannabes forum. Are you considering Aerofan SB?