MADGT4.
yes that is correct.
they are calibrated to be accurate to that speed.
But obviously you need some sort of speed cut defender for the standard computer.. as your car is limited to 180.
when you buy the white face dials.. it comes in a pack.
you get like 3 variations.
you get the speedo and tacho, then there is a fuel, water, oil, boost, torque split and whatever the non turbo version has.. I think it's VOLTS or something..
You get all of them and use the ones that your car requires.