A word of advice: While you have the rear window out, check the stitching that holds the zipper (one side of it, anyway) to the canvas top. In my case, a lot of the stitching was failing due to age and weathering, so I re-did it by hand using the same thread holes. It's a real pain, but you can only do it when the window is out. A nice, tight new window will put lots of tension on those threads, so if they're even close to wearing out they may not be able to handle the strain for very long. Just my $.02.