1 · 3 October 2014MCLAREN UNVEIL THE 650S GT3MCLAREN UNVEIL THE 650S GT3Same 3.8 litre twin-turbo V8 as the original 650S, but it's actually been tuned down to 500 hp in order to comply with FIA regulations.It's that race.Still plenty quick too, with a full carbon fiber body more than making up for the drop in power.Some pics: And a vid.Filth.