Nismo GT Pro LSD configurations

[tidi0x]

I have wasted too much time on this, more than I am willing to admit. I hope someone can set the record straight for me. 

I want to replace my Nismo (non GT pro, non GT) standard 2 way in my R33 GTST with a 1.5 way... Ideally I want to get an ATS 1.5 way Carbon LSD, but I don't want to reuse my 29 spline 5x1 axle stubs, and new 30 spline 5x1's are impossible to get a hold of ($$$), and I don't want to drop the cash on going to 6x1 stubs and axles ATM. Which leads me to the Nismo GT Pro 38420-RSS15-B5 or RSS20, as they come with new axle stubs meant for the diff, and is "Convertible" from a 2 way or 1.5 way to "Other ways", but that is where I am stuck as the documentation is a bit all over the place. 

To sum up what I have found I believe the all the Nismo GT Pro PN's are convertible from 2 way, 1.5 way, and 1 way; but Nismo sells 2 skus (2 & 1.5) so people do not have to disassemble to convert it. 

I found this thread on 350z but it left the question unanswered. https://my350z.com/forum/engine-and-drivetrain/620032-nismo-gt-pro-lsd-1-5-vs-2-way-and-torque.html 

Essentially the way I think it all works out is like follows... 
2 way 

1 way 

and 1.5 way would be the center pinion shaft in the 1 way block, but with the with the center flipped 180*. So the ramped side of the pinion would face the 1 way gate and act like a ramp. 

 

I can only get my hands on the 2 way in the states, and I am not trying to get stuffed on tariffs by ordering from Japan or anywhere else. I want to confirm that if I get the 2 way I can convert it to the 1.5.