In Australia they built their own T1 "copies" years ago, one of which still exists.
Can you tell us any more about this John?
The only connection between the very conventional and very successful Australian 520 Class 4-8-4s and the Pennsylvania T-1 was "shark nose" streamlining. Given the much lighter axle loads allowed in the design these 4-8-4s were only about the size of a North American Pacific.