GT Speedometer in a V6?

I'm curious why you would want to? Do you want the speedo to go up to 140? Or do you want the gauges in the middle and the information console?

If it's not the speedo, there is a V6 version of the console (only goes up to 7k RPM and redline is 5750 instead of 6k). I know because I just went and looked at mine.

As far as getting the GT one to work right, I would have no idea.