Hard top window broken
 

So I recently got a nice deal on a 97 with 80k miles on it and the seller said he'd throw in a hardtop at no cost, only issue is the window was broken. Everything else is in tact and I have the defrost cables.

In my search for a replacement glass I came across two part numbers and cant tell the difference between the two,https://forum.miata.net/vb/images/smilies/ononono.gif any help would be appreciated.

NA0163931C or NB4063931D