Good luck with it, it becomes a different car. From my statistical sample of one, you also need the trans. crossmember and the exhaust pipe bracket that bolts to the trans. I didn't need the speedo cable (both old and new carried the same p/n). Brake fluid resv. only needed the closing cap clipped off to allow attachment of the clutch fluid line. All lines and fittings are bolt in, no modifications required. As Larry said, even the wood around the shifter is different. You also need to do minor wiring (use existing loom) for the backup light switch. Enjoy, 4th gear ratio is the same on both manual and auto, but put it in 5th and its got legs.

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Hanno
'79 6.9 Sold (after 27 years)
'83 280SL, 5 spd.
'94 E320 Sdn. 5 spd conversion
'02 E320 Sdn.(on loan to mom!)
'87 300E (5 spd. conversion) Sold
'05 E500 Wagon