Are you still looking for one?...
This is for sale, 7,900 miles from new with just about every extra. CLS 63S AMG SB.
Regarding the 4matic, amusingly mine came with 4matic badges from the factory! The reason RHD wasn't available in 4 matic is because the front prop location and the pedal box of the RHD clashed. So the LHD S models were 4matic, however they never received the full power 585bhp S models in RWD, as far as I am aware, we were the only market to get them and there is only a handful in the country as it is! One day it'll be a cult classic for sure.