We all started somewhere, including mechatronix.
Yes that’s true. Unfortunately though, you didn’t answer the original poster’s question. You suggest firms that may be hiding somewhere because they don’t have a marketing department, but you didn’t name any. Nor did you respond to my simple questions of can or would you do such a restoration. What you are doing is responding to other’s responses, with a thinly veiled maligning of shops like say, that one in Cardiff everyone likes to slam…
Because the OP is fairly new to this forum—the first and only post, it seems likely that they don’t have extensive knowledge on the model, and maybe less on the nuance, time and cost of what it takes to do a Mechatronikworthy restomod. If they did they would not be here asking the question. There’s no substitute for experience.
What you could do, RamAir, is pick up a few years+ worth of old Classic Mercedes and Mercedes Enthusiast magazines. (Both from Sundial Publications out of UK) Go back 5-10 years. Scour them, and you will find some of the world’s top restoration houses that specialize in Mercedes. You’ll also find the occasional detailed story on one or more Restomods including Mechatronik. You can then start making calls. Go online and search also, for “Mercedes Restomods” and some names may pop up on finished cars (not necessarily Pagodas, and many with non-Mercedes engines) such as Mechatronik (no surprise there) Chris Warner Design, John Sarkisyan, Matthew Finbow, Derelict Design, Chip Foose, Renntech, Brabus and more. Start making calls and research their Restomods.
There are many firms that have done one off cars. If you have ever been to a SEMA show in Las Vegas, there are hundreds of one off restomod cars on display. The shops that do these would probably take on any make or model.
But I’ll stand by my original premise 100%: if a Mechatronik “M SL” quality restomod is what your client is looking for and they know and have the ability to pay for it, that might be my most serious call. They claim to build just five of them a year…