Can you find the info on that Road and Track article? I'd be interested in reading it.

There are people who retrofit a turbo on the 617. There's a company in the UK that specializes in it and adds turbos to a lot of Mercedes motorhomes. I met a guy this summer who had it done and really liked it. It can also be done in the 616.

That being said, I'd just put in a turbo engine and avoid the retrofit.

By the way, I have a turbo and non-turbo. In the Mile High city, the turbo is like adding a second engine.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13