CMP 3ton tipper (canadian or Aussie)

[Barnaba]

Maybe I already asked for infos about CMP tippers in the old forum, but I'd like to make a model of a F60S or C60S tipper.
I've seen that canadian and aussie tippers were different:
aussie had different body and twin rear wheels. Is there any other difference?

Could you please tell me where to find some pictures and plans to make an aussie model?
Thanks