I have a hodge-podge of seat belts.  I'm trying to restore 240Z HLS30 28736 to as original as possible.  Aside from some after-market stuff I have one complete Z car female-side buckle - photo attached - but need one more.   Can anyone tell me if this is correct for my car.  I posed a want ad and one fellow offered my a set which I believe is later series, having plastic reinforcement of one side.  

Many thanks,

Richard McDonel

I currently have a '72 with build of 12/71 purchased from the original owner that has the same belts pictured.  I've owned a couple of 1973 cars and they had the plastic sleeves at the base.