You don't have to pul anything apart to to see the wild difference at the front.
You could also try to compare part numbers of the arms to the 2 models and wonder why that would be the case.
Or you could go full retard.
You can easily pop a head gasket and have clean oil.
But was the car smoking brfore you took the turbo out? Maybe some coolant got in the induction somehow.
Explain yourself!