Well, I put a 2.65 rear end in my car and wanted to get a matching speedometer for the new rear end without having to get my current one recalibrated. I changed from a 3.27 to a 2.65 and it may have been a little much. Love the new highway RPM (80mph = 3000 rpm). MPG has increased about 3-4 miles, but I'm not 100% sure I'm going to stay with the set-up. Thanks for the offer, but I'll keep looking -- may get back with you if I can't find the right thing and experiment with yours by changing the speedo gears.