I have a Euro 230 SL with the original speedometer in km's. I have installed a rear-end with a higher ratio. Recently, I heard of a company (Bob's Garage) ? that has a gadget that attaches to your transmission to recalibrate your speedometer after you give him pertinent info. This would give me the correct kilometers per hour which I am comfortable with. Does anyone know anything about these attachments and the contact info.?
