I guessed.
Okay then, just for everybody's sake that reads this, and that might.. oh I don't know... search the forums first...
Hitech has said that an aircraft has to have been a production craft (no Ta152C-0, although it saw combat it wasn't a production version), it has to have at least been used in unit strength (Ta152H had exactly 1 unit, 12 craft, operational, and 163s were a helluva lot more numerous than that), and it has to have seen combat during the war (no Bearcats, Tigercats, P80s, Seafire22s, etc, etc)