I'm not sure many of the instructors can do multi endorsements, but if you are considering an instructor rating, then you need to meet the CFI Peter Phillips.
The Travelair is a pretty good aeroplane for the endorsement. Allan Scwarze (at Tyabb) owns about half the Australian fleet. Some of them show their age, but I have confidence in the maintenance. Its also a pretty aeroplane to build twin time.
Off the top of my head, the only other choices are MFS or Bini at Moorabbin or Bacchus Marsh.
Its a nice day, go to Tyabb and see who you can meet.