There are two problems with the gasser air box that have to be overcome to be able to use it. First, the opening in the air box that the turbo intake fastens to is on the opposite end as the K47. Second, the air box would be an extremely tight fit between the turbo and the fender.
For this air box to be usable you'll have to think outside the "box" (pun intended). I have that air box set and the only thing usable is the air box. The intake that is mounted into the box has to be removed and discarded. That corrugated flex hose may be useful, depending on where the box is mounted. Most likely the best thing would be to move the battery up in place of the old air box and put the new box in place of the battery. I've just never moved any farther than this speculation and actually tried mounting the air box.