I have a question for those of you who have installed 4.10 Gears. My local hot rod shop (who I highly respect) said that the installation of the 4.10's would take about 5 hours. And they charge $70 a hour. So it looks like I would be paying $350 plus tax. I've seen that some of you have paid about $200 for your installation. So my question is how long did it take your shop to install your gears and how much is your shops hourly rate? Thanks much.