Hi everyone, need your help. Opened a box from under my bench the other day and I found some seatbelts. I can't remember where I got them from but they are a little different to standard ones. These have an extra section on them that bolts to the B pillar and was usually on coupes. My hatchback that I have owned for more than 26 years came with standard one piece belts when I bought it. Did hatchbacks come with this other type of belt from new or is it off something else? It has GM on the press button section so they are definitely a Holden seatbelt and appear to be a late 70's style.
The piece I am talking about is on the right of the photo.