You'll want to exchange ideas with Ghurkha. He has the Indian version of a g-wagon with a factory turbo 616 in it. He can give you the skinny.

No electronics on a 617 turbo. I'd go for the 617 turbo myself, given your parameters.

__________________
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