Hi Jesse,
By 'updated turn stalk', I assume you mean a later 280SE(108) stalk into an early Pagoda switch.
Bear in mind that the Pagoda switch is much more petit than the sedan switch, further more the functions are different. The Pagoda dip switch is on the floor, etc.
However, it is possible fitting a 108 switch in a 113, I bought my 67 250SL with a 280SE stalk but many of the functions did not work propery and the switch was to big and looked very much out of place.
I agree with Tom. I also had to bite the bullet and buy a new one from Mercedes. It took me days to undo the mess with the wiring and restore all the standard functions.
Regards
Chris