I can't answer the injector question, but I do know that unless your car has already been converted, you will be much better off to convert your glow plugs to the pencil type plugs that fit in the larger threaded loop style plug holes. There is a it at Fastlane, but you can install the plugs without the whole kit as long as you make your own jumper wires to go from plug to plug.

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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