"Weren't some of those B767's actually delivered to Ansett with the F/E panels still installed and went into service that way?"
Due to an agreement with the union, the B767 was classed as a long haul aircraft and therefore required a F/E. The fact that it was designed without one didn't seem to matter. The aircraft had to be modified to accommodate this, which made them a little difficult to sell on. People wonder why they went bust.