I ended up getting the plastic window on my top replaced instead of a whole new top. It was expensive at 650.00 but that is at least a thousand dollars cheaper than it would have been to replace the top. After seeing what a good plastic rear window looks like I am glad I went this route.
I can get into the engine easily, and wow is it clear. It looks much bigger (it is not) because it is so transparent. I had gotten used to the cloudy area on my original window going down the center of the fold and around the edges which made the window look smaller, dim and difficult to see out of well. Its really something to be able to see clearly through a large, clear plastic rear window for the first time, recommended.
Ed