Hi there
I just installed a replacement TCU from V-Tech in Poland in my SRT6

https://www.facebook.com/VtechTuningService/
https://vtech.ge/

WOW!
This unit has changed the drive characteristics of the car completely.
The up-shifts are now under driver control - in other words - a stick shift. !
Down shifts are still auto but much more definite.
Brilliant.
Can't wait now to finish the rest of my planned modifications.
New wheels on this weekend - Simmons FR1 - Gold with polished lip.
Peter