The FZ1000S (gen 2) has fuel injection, aluminium frame, upside down forks, two piece seat and was made starting 2006 to present.
2001-2002 bikes had the Yamaha lettering on the tank. All came with the logo thereafter but some 2002 bikes would have been registered in 2003.Silver engines on all 2001-2002 bikes, then the black engines started to appear in 2003. Silver engines continued for a couple of years, I think, dependent on colour scheme overall.Lighter silver colours should be the same for tail, tank, mudguard and fairing.Black tail units are standard on dark grey (Mistral) and the later Lava Red bikes. The fairing on the latter is black with the red added by decal. The fact that some have fairing decals and some don't will be down to personal preference (I removed mine, for instance) or could be indicative that the fairing has been replaced but not had new decals added. You would have to ask the seller and decide whether or not he's hiding accident damage somehow. There's usually other clues, such as scratched bar ends, paint flaking on the fairing subrame if it was bent and straightened ... you have find that yourself. The yellow/black version in the UK was 2003 only. Not many around. Same goes for US imports which will be either the Skunk version (black, grey, white - very nice or a very rare US yellow/black/white Bee. Not the same as the UK yellow in 2003. You should, of course, ignore anything which isn't in the original and fastest blue ...