Can share in PM....
Suffice to say its by the book-hour ($125/hr), and they came in $1000+ under-budget on a recent extensive work-order and are methodical in saving/bagging parts you can sell / recycle. They will be first to say: "lets save this part or you may find a good used part for this"
Work is literally best I have seen in 20yrs on my SL.
Note: they dont just accept cars randomly for generic routine service and have waiting lists and turn down basket case budget restoration requests all day long.
However, if you are committed to your car and outline what you want to have done (even over years) they will establish a realtionship with you and treat you like their multi-Gullwing collectors.
And all parts are 100% M-B...down to tiny clamp on rubber funnel on fuel vapor evapaorator oulet.
If you ever have had a sub-system thats just not right and many have attempted to fix and its still not right....spend the $1000-2000 and have the car trucked over to them round-trip. For example, I did a rountrip on my fuel-jection pump 3 times (yes 3) in 2003-5 with an east coast vendor that was an example of not dealing with experts (although highly recommended up & down here and elsewhere).
Having your 113 set like a Swiss watch is priceless.They are by the mm spec and tolerances are with 0.1% of new.
Also, in my opinion having their documented restoration work done to your 113 adds immensely to its value.