Scott, I received my 3.22 016 upgraded by German Transaxles and they indicated with both the Porsche limited slip, the fresh internals and proper pinion set, it should be fully durable for my engine (417 bhp). They backed it up with a four year warranty.
I have no reason to question them as my old 016 was great for the thirteen years and thousands of trouble free miles it was in the car.
I also didn't have to go through the apparent grief (and expense) others have faced trying to convert the car from a 016 to an 01E.