so what do you think of that, what Wikipedia says about the North American T-6
The North American Aviation T-6 Texan is an American single-engined advanced trainer aircraft used to train pilots of the United States Army Air Forces (USAAF), United States Navy, Royal Air Force, and other air forces of the British Commonwealth during World War II and into the 1970s. Designed by North American Aviation, the T-6 is known by a variety of designations depending on the model and operating air force. The United States Army Air Corps (USAAC) and USAAF designated it as the AT-6, the United States Navy the SNJ, and British Commonwealth air forces the Harvard, the name by which it is best known outside of the US. Starting in 1948, the new United States Air Force (USAF) designated it the T-6, with the USN following in 1962.https://en.wikipedia.org/wiki/North_American_T-6_Texan
Sounds to me, as it is only the name outside the US for the same Aircraft.
I thought, if we could vary the canopy and antenna etc in the hangar, it would be nice to alter the exhaust too. The Harvard 4 flown by the Bundeswehr was the latest version and indeed not produced by North American. They sold the rights to Canada Car and Foundry after WW2, but actually it was the same aircraft named T-6J Harvard.