S13 Rear Seatbelt question

[BoostGetsULaid]

So i just picked up some rear seat belts for my 89 Fast back.

All my previous 89 Fastbacks have had just the lap belt and no shoulder strap.

Today i purchased a pair of Rear Seat belts w/ the shoulder strap. It came out of a 91 Fastback.

I tried to install it and i cant figure out how to make it work.

I googled it and come to find that there are 2 different types of seat belts. Now im confused and im wondering which seat belt comes from which years or models (probably from the zenki and chuki change). If its possible to make the ones i have fit and if not how would i make the other type fit cause i dont see any other holes than the 2 for the lap belt

Here's what i have

The ones i found searching
Modified by BoostGetsULaid at 11:31 AM 5/5/2008

[Drift Motion]

first pic, is a pic of s13 hatch rear seat belts...same as mine, mine is a 91duno about zenkis tho...

[H8tred]

If you want the three points, there are anchors behind the quarter window trim. I will trade you trims, and give to the pods for the retractors if you're interested.

[H8tred]

No interest? I'll take pics if you want, black, and already out of the car.