Convertible rear window

[jgrffin3rd]

The rear window on the convertible top of my 1964 skylark is clouded and discolored. Looking to replace, and plan on keeping the plastic window (as opposed to upgrading to glass). Has anyone had this done? Can you recommend (or caution against) a specific supplier?? The rest of the top (white btw) is in good shape.. It has a metal zipper for the window.

Thanks
John