OM Exhaust Manifold Thread
OM Exhaust Manifold Thread
Here is E36 turbo manifold I made to my friends car some years ago. Will not fit
I suggest you to make new custom manifold for your engine. Fitting another manifold is really PITA. Position of turbo can`t be change and so on.
I have many exhaust flange drawings. I can check what engines have same cylinder spacing like OM606.