You can change it electronically as well I think...
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Oh rearwry... I havent seen these before. Its kinda cool and seems simple but I'm not really worried about the speedo (at least at the moment). I just want it to shift correctly so I can push back my tranny swap as far as possible because my 5th child was just born so $ is tight . Daddy still needs some sort of toy lol. It just suckes when I take off my car sounds mean as hell but takes 10 yrs at redline to figure out if it is going to shift or not :/