Nick Dellis·Porsche 911Porsche VideoPorsche 911 (991)991 GT3VIDEO: Chris Harris Drives the 991.2 GT3 The Porsche 911 GT3 | Chris Harris Drives | Top Gear In this week’s instalment, Chris Harris tackles the mighty new, 493 bhp 991.2 Porsche GT3. And goes very, very sideways.