is this a good turbo choice?

According to the turbocharging book I read, diesel turbos have a different oil seal that isn't designed for the higher vacuum of gasoline engines, allowing oil to be drawn into the compressor side of things if swapped over. I have no idea if this is true, but I ran it past a John Deere mechanic buddy of mine and he thought it made sense. He said diesels basically don't make vacuum? News to me