Hi 7omly,in top gear at around 5000 revs have a look at what the speedo reads . . . Is it 60 or 100? This will tell you if your reading Mph (60) or Kph (100) Anyway, 260mph! that's the top end of this Porsche 9FF, even if it is blue
buy the number sheet thing that i posted above for £20. job done.
DecokeIf you convert the speedo (as 7Omly's has been done) the odometer starts to increase in miles instead of km's from the point of the conversion.