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Yeah. You need a speedo gear. Not a chip. The speedo gear is easy to change if you have a jack/jack stands, or a set of ramps (or a pit, or a lift). If you've got cruise control you just unbolt the speed sensor from the side of the tranny and pull it out. iirc the speedo gear is stuck on the end of the speed sensor.
It's one little bolt (perhaps 3/8" or 12mm or something)