If that style slider window is a 69-72 in Guan's Blazer that would really surprise me. As I was told the 69-72 slider window was a two sliding combo. Yes that is Guana' blazer in the photo. But I don't think it's the 69-72 blazer slider he's using. I've seen photo ads with the double combo. But again never got to far on my window switch out. Maybe they did make two style sliding window. Another member says they do fit with some trim work. The square peg and round hole would sure be a lot more trim work... However the shape appeared the same last Time I held it up to my 72 window. I think Guana need to get into this post. I'd love to hear what he has to say about the slider he has.