There are some neat parts from Australia. The Hurricane manifolds, Timing sets, crank dampers, headers, etc. The big problem is the dollar exchange rate, and shipping charges. There is just as much equipment over here, just different. Shop around, and ask questions. A new Hurricane intake, will probably cost over $600 usa, where an Offie, or Clifford, can be found used for about $150-$200.
It all depends on what your plans are.