As far as I'm aware, there were no KDX400A1's brought into Australia in 1979, apart from one offs to build hybrid 400cc MX bikes etc.
I know 8 x KDX400A2's were brought in by Brisk Sales Kawasaki in 1980 though. (I think it was eight)
The late Gregg Hansford taking some time off from bitumen to play in the dirt in 1980.
And a complete new KDX400A2 brought along as a donor bike.
There will be A1's out there, but I think all will be imports.