I thought i posted this thread already but it didn't show up or i didn't finish it. Anyways i got into my car today 97 cobra, and noticed my speedometer wasn't working, so i'm guessing and hoping that its just the 23 tooth speedo gear that i had put in with my 4.10s thats the problem. Any other suggestions what i might be? Hoping that its the gear b/c thats a cheap fix.