What is inside a column shift steering column?

Well, sawing the tube off short and installing a bearing is pretty simple when its a floor shift column. Relocting the column shift mechanism to under the dash? I don't know anything about that.
I know I wouldn't want anything like the OEM mechanical linkages under there with my wiring. A shift cable could work I suppose but having the original column shifter actuate that cable still means having a similar arm with same throw/travel under the dash. Good luck with it.