Ethanol in a VW motor

[Cam]

I like the idea of the turbo over the gearbox, however I was planning to mount mine behind the rear apron (behind the motor, under the tinware). I have seen a few VW's with this set-up and cant imagine the oil return should be too much of a problem, especially since its so close to the where the case is full flowed that the pressure should be there to stop the oil pooling. Be interested to hear if anyone has had experience mounting the turbo in the position.