There were 3 types of anchor bolt covers used in 1969 Camaros. The first was the type your friend has, a tab for the bolt to pass thru. This was used from all of 1968 and up to Feb 69.........The second type is the style you have on your car, a metal insert with 3 clips to snap onto the anchor. This was used from January 1969 till June 1969.......The third type has a tab for the bolt to pass thru but sliced on the bottom and has a metal snap button to keep it closed. An improvement over the first design.
Having said all that all three styles had overlapping start and stop time frames. These vinyl boots were used by all 5 GM seat belt suppliers. Hamill, Irving, General safety, Robbins, and Bay Trim. These time frames are not set in stone because of many variables.
camaronut. the ones you have (type 2) would be the correct ones for your car (6A). Hope this helps. Clete