I have a 1968 firebird (not a convertible). It has shoulder harnesses with a spade type clip. However, no buckle. Where should it insert? I had posted a similar question regarding what the receiver looked like. I received on reply stating it was a double receiver. I just found this on a Camaro web site:

"'68-'69 Camaro owners are accustomed to finding two sets of belt buckles between their front seat and the drive shaft tunnel. ....The clip belt was attached to the headliner and the buckle belt was mounted to the floor on top of the lap buckle belt, both inside the flexible plastic boot."

Does anyone have a picture of this arrangement? Any one know where to purchase? Any help is appreciated.