2.5 in a W123

[whipplem104]

Hello, I do not frequent this section very often but I have a good question.
I have a 1983 300td wagon that I want to install a 2.5l turbo motor into. I am a Mercedes technician and have done lots of fabricating.
Really the question is has anyone done anything like this before and what do you think I need to to the conversion. I understand that the 2.5 uses a vacuum operated waste gate and that the computer also controls the idle. Besides the computer and a couple of vacuum transducers, what else will I need.
My long term plan is to install an overdrive transmission on the back of the 2.5 and have overdrive with lock up. I was thinking that I should be able to get pretty fantastic mileage.
Also I was curious if anyone has looked into rack and pinion steering on the 123 chassis. I was going to go after this at the same time.
Just looking for some positive input, thanks.