ZX6 interchangeability question.

OK 6 gurus, a mate is fixing up a 12/99 model ZX6R J model, he's chasing some bits & needs to know which models are the same or similar so I said I'd ask on here.
So... I'm asking on here...

well any j series (00-01) will work, maybe some parts of a g series (98-99) and most definitely anything not related to engine stuff from an a model (02) the a model was the 636 engine in the j series shape...

hope this helps. oh and i know you're being correct but id either refer to this bike as a j series or an 00 model as the 99 will only confuse people