I allready searched, and it looks like I need a red 21 tooth speedo gear for 3.73's. I just wanted to make sure that's right before I order it. Thanks!
http://www.latemodelrestoration.com/iwwida.pvx?;item?item_no=LRS-17271C 1&comp=LRS
http://www.latemodelrestoration.com/iwwida.pvx?;item?item_no=LRS-17271C 1&comp=LRS