In this week’s instalment, Chris Harris tackles the mighty new, 493bhp 911 Porsche GT3. And goes very, very sideways. Subscribe to Top Gear for more videos: Watch more Top Gear: Chris Harris Drives: Drag Races: Series 23: The Porsche 911 GT3 - Chris Harris Drives - Top GearIn this week’s instalment, Chris Harris tackles the mighty new, 493 brake horsepower Porsche 911 GT3. And goes very, very sideways.Want to watch a bit of Top Gear on the internet? Welcome to the most comprehensive collection of official clips you'll find on YouTube. Whether you're searching for a caravan challenge, Ken Block in the Hoonicorn, cars versus fighter jets, Stig power laps or the latest Chris Harris Drives, you can find all the iconic films here. Make sure you're subscribed to the official Top Gear YouTube channel: This is a channel from BBC Worldwide who help fund new BBC programmes.