On the pages devoted to the Toronado XSR Coupe in a 1977 catalog, Oldsmobile asked, "Can we construct one for you?" It turns out they meant precisely that -- one. The XSR was a 1977 Toronado sent to American Sunroof Corporation (ASC) for a T-top conversion. This was no typical conversion, but a energy T-prime with glass panels that slid below a wide middle bar. Not solely did an airbrushed XSR share the cowl of the Olds "huge-automobile" brochure, however it was additionally featured on a two-web page unfold inside. Ultimately, though, the top mechanism was judged to be too troublesome, so the one XSR ever built was the prototype. Instead, Olds produced the Toronado XS, an XSR with a traditional tinted-glass sunroof instead of the T-top. Both shared an unusual wraparound rear window usually compared with Studebaker Starlight coupes. Using scorching-bent-wire technology to kind sharp corners, the glass wrapped from B-pillar to B-pillar. Otherwise, the XS, and for that matter, the XSR, have been normal Toronados. With the downsizing of Olds' full-size models in 1977, Toronado grew to become the biggest Oldsmobile, weighing at least 4,747 pounds and with an overall length of 227.5 inches. The 455-cid V-8 of yore was replaced by a 200-horsepower, 403-cid V-8. The XS offered for $10,684, or $2,550 more than a base Toronado Brougham. ASC bought back the lone XSR in 1978. It hoped to sell other manufacturers on the "electric, self-storing T-Prime Boosts" but had given up by 1981. The XSR was then sold and disappeared into the used-car market. The Firethorn Red T-top Toronado featured here is pushed in good weather