I have an update for you guys, on my roadster.
Same problem happened to mine last Oct and both sides are broken.
I thought it's a small-medium size hinge/component and I tried to so a search online and found nothing from Nissan
Eventually I talked to a shop and I was planning to have them remove the top and those broken components to see are they repairable or I can have a shop to machine/duplicate the part for me.
Eventually, right before I did that, I calculate the potential cost:
1) remove the top
2) take it apart
3) have someone to machine the parts (if possible since I have no idea exactly the size and the shape of it)
4) put the replacement parts and the top together
5) Put the top back onto the car then put the canvas back on.
This already will cost me around 3k to 5k
AND, I have to pray the top will work well since it's been taken apart and the new parts might still be slightly off than the OEM
Therefore, eventually, I found a whole top from ebbaaay, used one.
cost me about 3k, shipped it to Canada, cost a bit, then have the shop to just swap the whiole thing.
There's some glitch but at least it's all done now and I know it's a complate OEM top.
Regarding that broken parts, I am glad I chose the latter route.
I checked out the broke parts, it's actually a big piece that goes from the broken area to the back of the side window, and the shape is very weird which it's impossible to machine (or it'll cost alot if someone is willing to do it)
So... if some of you are still stuck with that broken part(s)/top, go get a used top and swap it.