Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - Electric power steering and steering column part info

I've noticed that the ZC6 / ZN6 has a surprising amount of part numbers for the electric steering column. The assembly is purchased as 1 assembly that integrates the telescoping column and the electric assist motor.

Heres what I've found for part numbers:

Code:

34500CA171

Subaru BRZ (20D) 6AT Premium        2018, 2019, 2020

Subaru BRZ (20D) 6MT Premium        2018, 2019, 2020



34500CA160

Subaru BRZ (20D) 6AT Limited        2018, 2019

Subaru BRZ (20D) 6MT Limited        2018, 2019

Subaru BRZ (20D) 6MT STI        2018

(This one came on the STI/tS trim)



34500CA110

Subaru BRZ (20D) 6AT Premium        2016, 2017

Subaru BRZ (20D) 6MT Premium        2016, 2017



34500CA100

Subaru BRZ (20D) 6AT Limited        2016, 2017

Subaru BRZ (20D) 6MT Limited        2016, 2017



34500CA050

Subaru BRZ (20D) 6AT Premium        2013, 2014, 2015, 2016

Subaru BRZ (20D) 6MT Premium        2013, 2014, 2015, 2016



34500CA040

Subaru BRZ (20D) 6AT Limited        2013, 2014, 2015, 2016

Subaru BRZ (20D) 6MT Limited        2013, 2014, 2015, 2016

I'd love to know if anyone can answer any of the following questions:

* What the difference is between parts?
* Does the tS/STI have an improved road feel?
* How compatible they are with swapping between years & generations?