No not up to now on GT5.
But I hope to see it soon as catching a slide with 900 steering is a nightmare.
Even if they just give as a few ratio options like 270, 360. 440, etc etc.
Well I would not let just that put you off, 900 can be hard to cope with at times but its not to bad once you get used to it.
You just have to remember to turn a bit more than you normally would.