This may be a dumb question but I got a service manual for my 05 manual 6 speed. In it they list several manual transmissions models. My question is how do I know what transmission I have and the same question about the axle ratio too. I have looked on the window sticker and the only info I can find is that it has a 11. 5" rear axle. Is any of this info list anywhere on the truck? 
