I have a Lentech Street Terminator Plus in my 87 GT. I have 225/60R15 tires, and 3.73 rear gears. I have a 21 tooth speedo gear and my speedo is still 10 MPH fast. Lentech said I could get a 23 tooth but didnt say that would fix it. Any ideas on where I could get one? Any one with a Lentech have this problem? Thanks for the help.
Josh
Josh