Never seen one like that. I got a carbon fibre one waiting to go on, but it is the same shape as the original. Mines black, so you don't notice it that much. Would any replacement not have to be the same shape to fit on to the bike?
What other mods are you doing to make it look retro? That r1 engine will be impossible to disguise imo
I have a bandit 1200 95/97 on my bucket list. Put up some pics of your bike, and best of luck with retroing. Deefer would be able to give you some advice on what's possible, as he is the God of the Fazer