Hi
I've a friend who bought a 2008 S-350 Car. Yes, he's that rich

Now, he was checking the website of Mercedes, and he learned that it comes in two models S-350 SWB and S-350 LWB. Checking the specifications, they are the same EXCEPT for the length and the weight.

The LWB is longer and has more weight. The question that he has, how would he know whether it's SWB or LWB? I told him he might know from the Chase number. The chase number is WDD2211561a210533. Still, we could not figure it out.
So, can someone help how to figure it out?

Thanks