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| On 06.01.2004 Alan wrote: | | I own a 98 Automatic mustang GT and installed 4:10 gears in the rear, the gear that was in it was stock originally, My question is how many tooth speedometer gear do you recommend to bring the speedometer back to being accurate. Thanks | | | | Bill replies: | | Far as I know you need to have a chip burned or a reflash to correct the speedo in the auto cars when changing gears. | |