Do yourself a favor, buy one from Smoothline sooner rather than later. When I was looking for one several years ago I searched for one on the big board for a couple years with no luck. I finally broke down and bought new. Since that time (about 4 years), I've seen maybe two come up for sale, and those were for Solstice's. The only other times I've seen them is when someone is selling a car with one on it, again Solstice's.
BTW, the Smoothline Club Racer is Sol/Sky specific since the decklid humps are different shapes. Whereas the Smoothline LeMans will fit on both cars because the rear window extends to almost the ends of the humps.