need help, vert seatbelt question

I changed my interior a while back and the seats were from a coupe. They didnt have the seatbelt catch on the sides of the seat either but I discovered that they did have the metal plate inside right where they catch mounts. If yours are this way, you may be able to buy a set from Ebay and install them. I just saw a set on there earlier this week.

If you replace the seatbelts from another vert, you will have the slack. What keeps them slacked is a small plastic "button" that is placed in the seatbelt material itself about 12-18" from the buckle. If you remove it, it may retract all the way back.