You haven't even gotten to the hard part yet. There is detailed instructions on this site on how to do it. I just did it on my 83 300d
The bottom tube hack into small pieces drop pan. Massacer rubber grommit and dig around tube to get grommit out. Do not beat on aluminum oil pan rail. Become farmilliar with how far up the grommet goes up the tube becouse thats the last step. DO NOT put the new grommet on the new tube out of the car.(my grommet broke in my hand).

I shortened the upper tube by about .25 " to get it in.

If you not on a lift you need you need to be. Take you time it took me about 10 hours. The MB mech said it can't be done without taking the turbo out. good luck..

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1983 300 D 256K Turbo drain, vacuum pump