Assuming that you are pulling the trans with the engine remaining in the car, drop the rearof the trans (with a piece of thin wood between both the engine/firewall and fan/radiator) down. Now you can snake a few long extensions up from below and from the rear to get the trans/engine mounting bolt. With luck, the dipstick bolt will also be easier to get to.

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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