Ohh.. just incase someone tells you a speedo gear will work fine.. dont listen. i have the white 23 tooth speedo gear when i had 4.10's my speedo still read 10mph Faster than what i was going. I've since removed the solid axle and 4.10's and got a IRS w/ 3.55's. My speedo is DEAD ON with the same white 23 tooth speedo gear... speedo gears = worthless
yeah i have the gear and its ten off and im tired of it. So thanks for the hint on where to buy and how long does it take to install and is it difficult to do?
+1 on the dallas mustang speedcal. Got it perfect. THE INSTRUCTIONS THAT COME WITH IT SUCK THOUGH!!!!!!!
it is about a 3 out of 10 in the difficulty level to install, and it take an experienced mechanic around 15 mins.