At the 2005 Tokyo Motor Show, Nissan unveiled the GT-R PROTO, a prototype version of the 2007 GT-R. It is reported that the next GT-R will be a purebred sports car not based on a sedan chassis like the previous models. The next GT-R has been confirmed for release at the end of 2007 with a 3.6 L twin turbo VQ based engine generating 450 hp.[citation needed] Pricing may start at 7.5 million yen. The next GT-R's suspension and engine is being tuned by Lotus and Cosworth respectively, the former at their development center in England.[citation needed] Some of the current prototypes have a Skyline badge, Nissan says local distributors can decide whether or not the car will be a Skyline for their market, but all will wear the GT-R badge. [16]