What yrs./models are these in? I am thinking of putting one in my 83 300D. I know it will be sluggish, but 90 % of my driving is flat highway so I want the fuel economy.

Any modifications needed for it to fit?

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81 Mercedes 300SD 289k.......SOLD
82 Mercedes 300CD 252k......slow ride

82 mercedes 300 SD...mi Unknown
83 Mercedes 300D ????ksniff..gone too
84 Mercedes 300D 148k........SOLD
85 Mercedes 300TD 386k and holding some one elses project