FZS1000 (Gen1) list of year on year spec changes?

[Falcon 269]

Also Wikipedia (for what its worth) states that the Thou in its 2004-2005 final year model run lost 1Kg in weight down from 231Kg to 230Kg wet weight so what was changed on the bike so that 1Kg could be lost?

And I never heard before that 2003-on bikes had the headlights permanently switched on......can anyone else verify that?

Pre-2003 the lights were switchable.  After that they went to permanently on.

There's no reason why the 04-05 model should have lost one kilo in weight.  If anything, it should have gained weight because the final year of production included a small cataclysmic diverter in the exhaust.