I have an 04.5 lly with the zf6 in it. As much as i love manuals and enjoy driving them im just not a fan of manual pickups. How hard would it be to swap in an allison if i can i would like to swap in a 6 speed allison too. Would i have to buy a tcm or is there still a "disabled" tcm in the zf6 models? Is the tcm part of the ecu? Would i have to buy a different steering column?