W140: Brabus 6.9 ?

Hello!

I need an answer on one specific question.

The car is for sale in Ukraine.
They say it\'s Brabus 6.9.
It\'s VIN is:
WDB1400571A389679

Model 140.057 600 SEL V12 / S 600
Production date 19.09.1997
Engine 120.982 12 009428

So it\'s 1997.

As you see, some parts look like original:
Steering wheel
Shift knob
Instrument cluster
Some badges
Exhaust

We\'re 6.9 produced in 1997?

Brabus was unable to give the answer.

Thank!