Here are two sounds for the FZR, they are not meant to be accurate but it's only a desperate attempt to give some balls and growl to the FZR. There is not much gear whine, I hate gear whine it's giving me a headache.
Both sound better in chase view mode, there is nothing much we can do to the on-board sound because of the pseudo stereo issue.
Sound 2 is really on the clipping limit, that's the reason why I suggest you to use it for on-boards views only because it may create distortion if used when spectating in some cases (e.g. a populated starting grid on the oval or South City where there is a lot of echo and early reflections). Sound 1 seems to be OK in all cases, although I find it a bit 'weak'. Of course it depends on your sound system and settings.
Here are my FZ and Rac sounds. They both have that hollow sorta Ferrari/350/G35 sound. I think they might also clip a little but not much at all, just turn down the exhaust volume if its too much for ya.