In this week’s instalment Extra Gear spends some time in Tokyo with one of the most sought after Porsche tuner’s in the world, Akira Nakai of RWB. Rory is joined in studio by the son of the three-time F1 World Champion Jack Brabham, racing driver David Brabham, and race engineer David Lapworth to discuss the all new Porsche GT2RS and the Bentley Speed 8. Chris gets another go at the Bentley Continental GT but this time it’s around the Top Gear test track.