Porsche has released UK-specific details of the 911 Speedster: a retro-inspired send-off to the outgoing '991' generation of the sports car.

The Speedster is now available to order here priced from £211,599 inclusive of VAT, almost exactly £100,000 more than the existing GT3.

First revealed in production form at last month's New York motor show, the soft-top Speedster is the first to be developed by Porsche's motorsport division. It arrives with the same 4.0-litre flat-six as the current 911 GT3 and GT3 RS, and receives individual throttle bodies similar to the 911 GT3 R race car for improved response under acceleration. 

The naturally-aspirated engine revs to 9000rpm, develops 503bhp and 346lb ft of torque, and is paired exclusively with a six-speed manual gearbox. The Speedster promises a 192mph top speed and can crack 0-60mph in 3.8 seconds.