A competant auto upholstery shop should be able to do it, provided your charge card limit matches their competance!
I had a custom leather dash crafted for an MG-TF restoration and it looked great by matching the seats, but I don't know if it was worth the maintenance and worry. Whenever the car was parked, the towel came out to cover the dash and I probably overfed the thing with Connolly.
I'm not sure how it would look on a MB dash, since you would have to place the hide over the front of the dash to blend well. On the TF, it was just the top since the face of the dash was mostily wood. You might want to take that in consideration when doing this project. How much is a used dash?