I was just looking through the GT3 screenshot gallery and noticed that in this pic both the speed and rev gauges are different than the ones i have on my GT3. Is this a different version of the game or can you change the style of the gauges?
I'm quite sure that your screenshot is from demo-version of GT3. There are no red area in the rev gauge and no that red light what blinks. You can't change the look of those gauges.
Actually they all don't go up to 320km/h, some goes only 240km/h or 260km/h. If you buy a gearbox to that car or something like that, then the gauge will change and go up to 320km/h.