Flying on FAA PPL
I'm not so sure that that is entirely correct that you need to convert your FAA license to that of the host country where the plane is located, prayaviation.
Given that one is an FAA certificate holder you are allowed to fly a N tail no matter where it is. It's the equivalent of flying US to mexico or the Bahamas. One wont need to convert their license to do that flight, bear in mind you need a radio telephony license for flights outside the US.
I believe you are perfectly within your rights to fly an N-tail aircraft wherever it is located in the world without converting your license. Simply because it's an american registered plane and is under the FARs. So is your certificate.
If you want to fly a plane in a different country that isnt an N -tail. You will almost always have to convert your license to the country where the plane is registered.
Nowhere in the far/aims says one needs to do an IPC in a N-tail. As long as you meet the requirements set out in the PTS you're good. It does however need to be done by a CFII.