We drove a Theon Design Porsche 911 earlier this year and had a great time. Now the UK-based re-imaginer of the 964 911 has a new commission that breaks the 100-hp-per-liter barrier. We don’t have a drive report for you, but the specs suggest the right-hand-drive car will be quite a thrill for its new Brit owner.

The heart of the car is a comprehensively overhauled naturally aspirated, air-cooled 3.8-liter engine, what Theon calls “a flat-six marvel” that produces 407 bhp at 7,600 rpm as well as a “stout” 293 lb-ft of torque, giving the 1,150-kilogram (2,420 pounds wet) machine “effortless in-gear performance.”

“This potent, wonderfully free-revving powerplant incorporates advanced drive-by-wire throttle technology and Theon’s in-house-developed switchable engine mapping system, offering four distinct driving modes from the relaxed, detuned Town setting through to Race mode, which offers full power and instant throttle response,” Theon says.