Hi Tom....matter of fact....I just had this very conversation with Kevin Palmer of Reef Photo in Ft. Lauderdale and he knows his stuff. They are Subal dealers. I just came back from a trip to Raja Ampat and Misool and my wide angle pics were
a little soft on the edges as usual although the resolution of the pics of the D800E was off the scale lovely. I was using the Nikon 18-35 on those shots and a DP-FE port. Of course, that is an age old dome port problem across the board. So I queried Kevin on that very matter.
Anyway, I wanted to upgrade to the Nikon 16-35 as it is a better lens. Of course, Subal doesn't list that lens' use with type 3 ports. Kevin insists that you can use it with a type 3 setup. That is what he uses on his Subal rig for wide angle. The width of the lens certainly fits through the port opening with no problem. The length of the lens requires the EXR-90 as you probably already know. Additionally, I asked if the optics would be correct with my DP-FE3 wide angle port. He recommended not using any diopters at all. But, he recommended using the new Sea & Sea Internal Correction Filter to make the edges of the wide angle pics to look sharp. Option #2 on the soft edges is to never shoot a wider aperture than f11.
But, to answer your question, YES the Nikon 16-35 does fit in the housing although I have never done it. You can chat with Kevin @ 954-537-0644 and he can answer your questions more eloquently than I can.
The Suball ND800 housing and the Nikon D800E that I'm selling are in excellent shape.
All the best..JIM