I am guessing that you have the 5 speed, and from what I have read, you need to pull the whole trans to put in the kit and it is not worth the time adn effort to install the trans go. If you are going to pull the whole trans, you might as well just build it and not worry about it.
yeah got the 5 speed just wanted to do some minor stuff to the tranny dont plan to have the truck long enough to do anything major. just seein if it was really worth doin. and dont worry next truck WILL be a Dmax