For sale here is a set of Cogs that go in your transmission so that you can get the proper and accurate speedometer reading when you swap out Differentials, Transmissions, or even Tire sizes. The set also comes with the cylinder that screws into your transmission/speedo cable, with retaining pin and good Oring. Here is a listing of the color cog and gear ratio's. This is up on ebay so please stop by and check it out. Thanks!!

http://cgi.ebay.com/ebaymotors/ws/eB...m=270264254663

red (4.11:1)

blue (3.70:1)

white (3.90:1)

black (3.545:1)