The 4×4 capability adds so much value to a truck like this. You’re not just getting a show piece, you’re getting something actually functional. That appeals to me more than a purely cosmetic restoration.
I’d be cautious about the 4×4 system. Make sure you get a pre-purchase inspection that specifically checks the transfer case and front differential. Some owners have reported issues with the actuator on these models.
Make sure all the service records are included. Mercedes owners that kept up with regular maintenance tend to have fewer issues long-term. Ask for the complete service log from the original owner.