Toolchange swap Tool-numbers (no replies)

I have 4 Spoolholder fix in my printer and have 2 switching extruders (with a servo)
Spoolholder 1 goes to left Lever of first Extruder,
Spoolholder 2 goes to right Lever of second Extruder,
Spoolholder 3 goes to right Lever of first Extruder,
and Spoolholder 4 goes to right Lever of second Extruder.
Physically i can not change this because i have 2 Spoolholders in the back and 2 in the bottom of the Printer.
I'd like to change this in Firmware but how can i do that?

desired configuration is:
T0 = E0
T1 = E2
T2 = E3
T3 = E1

Any ideas?

My Printer uses an MKS SBASE 1.3 and the MKS-TFT32, no other displays.
I use a single Hotend and the Firmware is Marlin 2.0.
On TFT i can make custom buttons for change the extruder, thats not a big deal, but for Temp messages that goes to the screen i must have the value T without a number.
For Printing i only use the TFT.