I have been keeping my eye out for a suitable differential at the PNP. It seems that the correct ratio final drive of 2.65 was specific to diesels only. Final drives with the correct ratio of 2.65 were used 6 years including 1987 300DT/TDT, 1990-1993 300D 2.5T, and the 1995 E300D.

GSXR, you mentioned a LSD core. Did you fit the LSD core into the final drives of your 300DT? Where did you find the LSD cores?

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1987 300TDT smoke silver w/ burgundy leather interior
2000 VW Passat wagon indigo blue w/ beige leather interior
1985 Mustang SVO
1970 Chevrolet K10 fleetside, shortbed