Steve...I may be wrong but those look like the newer style...I think 86/87?What year are those from ?
There is 2 designs of seat belts ! First design 78-84 second design 85-87 !87.they will work in 78-88 gbodys.
The female ends are different ! I've been looking for a pair of grey bucket buckles for my 84 !yes the "plug configuration" differs in these years, im sorry i forgot to mention that.well we are down to one set of grey,have sold the other sets on other forums:nanawoot:thanks for the "clarification" fellas.