So I grenaded my ring and pinion at the track Saturday night! So I threw a set of Motive 4:10's to get by, but I have a question: I am going to build the rear end this winter and need to know how to get my mechanical speedo to work with 4:30's? I have a 23 tooth gear in the tranny now (which is the biggest I can find) what do I have to do to make it work???? HELP!