High Quality Content by WIKIPEDIA articles! The J.72 was the first product of the Panther Westwinds company, sold from 1972 through 1981. It was an ultra-exclusive luxury roadster, intended to compete with the best of the 1970s motor industry. It used mechanicals from the XJ12, including the 5.3 L Jaguar V12 engine, and was styled like the Jaguar SS100. The J.72 was also offered with the 3.8 L and 4.2 L XK engines.