I am going to explain my problem with an example:

I have 2 E38s:

No 1 Is a "2012 Chevrolet Silverado 1500 with a 6.2L V8 OHV 16V FFV" with the following VIN & Calibration Info:

VIN 3GCUKSE24CG305387
Engine Gen-IV V8
Transmission 6L80E Auto
PCM flash 2MB
Operating System 12653249
Calibration 12653852
OS ID AA
Cal ID
BCC ABHB
OS Level
Cal Level
Cal file name 12653249.calz
Cal file version 7.60
Cal file date 18th September, 2017
Operating System 12653249 $A8C797C0
Engine Operation 12640866 $4122698A
Engine Diagnostics 12640903 $C6552E48
Fuel System 12640909 $68FB7297
System 12640930 $3CBC513A
Speedometer 12640959 $D3AB7F2F

The second ECU belongs to the same Year Make Model "2012 Chevrolet Silverado 1500 with a 6.2L V8 OHV 16V FFV" with the following VIN & Calibration Info:

VIN 3GCPCSE29CG241793
Engine Gen-IV V8
Transmission 6L80E Auto
PCM flash 2MB
Operating System 12653249
Calibration 12653852
OS ID AA
Cal ID
BCC ABHB
OS Level
Cal Level
Cal file name 12653249.calz
Cal file version 7.60
Cal file date 18th September, 2017
Operating System 12653249 $A8C797C0
Engine Operation 12640866 $208DD63E
Engine Diagnostics 12640902 $DB842E26
Fuel System 12640909 $68FB7297
System 12640928 $EA1042E
Speedometer 12640938 $83F4BDA2

I don't know which calibration I should use to calibrate another E38 ECU with different VIN but same Year, Make & Model.

Thanks for your help in advance.