Gabix

Dear members,
I would like to get help to find out what kind of pretensioner should I to put in my vette. Car details : 2013 C6 GS Targa Top. The original seat belt pretensioner the same as on the first 3 pictures, but when I checked the p/n on the Gm parts and when I contacted with the Chevy dealers they gave me the last picture pretensioner's number. Well the problem is the seat belt buckles not click in the latch and another different is the wire for the tensioner is not included inside of the pretensioner. My original one has a seperate wire.
I would like to know where can I buy the right one for my car, or what should I to do to fix this problem.
Thank you.