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A prototype of the latest in Jag's most sporting of XKs was caught in cold weather testing ahead of its Paris-show unveiling this fall — along with its coup-ay sibling. It's the XKR, in convertible trim, which sources have said will be powered by a supercharged, 400hp version of the Jag 4.2-liter V8. Will the ungainly BMW M6 and Mercedes SL 55 AMG finally have some decent competition from Ford's top cat, or will its reputation as a roadway dilettante be furthered. Stay tuned. Rarow.

Spy Shots: 08 Jaguar XKR [The Car Connection]

New Jaguar XKR Bagged & Tagged [internal]