[jb92563]

Once the rear window goes less than clear, its because the chemistry of the plastic has deteriorated to much and although Plexus will buy you some time, your plastic window is about a year or 2, if you don't retract roof often and store car out of sunlight, from cracking to the point of failure.

There are replacement options like:
1) a new aftermarket canvas roof to slip over the existing frame ~$450-650 plus ~$500 install or 8hrs DIY.
2) a used top with frame from an 03 model with glass window from Dismantler ~$750 install is DIY in less than an hour.
3) have a new plastic window sewn in to your top at a Sailboat Sail repair shop or other canopy type repair places ~$300 or DIY in 16 hrs with a hand needle and $100 worth of materials and plastic.

Buying a nice looking used top/frame with plastic window still leaves you with an old plastic window that will die sooner rather than later. Seems the lifespan of that plastic is no more than 20 years regardless of sun exposure.