If your car already has a twin cam motor
its worth the expense of cluster and install.
The thing is, your stock cluster has the speed
sensor built in , if you put GSR cluster , you will
loose your speedometer.
GSR cluster has the speed sensor on the transmision
then the signal is transmitted simultaniously to the ECU
and speedometer.
So what im saying is a GSR cluster must have an
electronic speed sensor on the transmission.
If your still confused , just call me @(514) 595-5394
I have a cluster.....($200.00). The instalation , depends
on your setup , in your car.
ask for rob @ LAMINAR