It’s a tantalising prospect, isn’t it? Envisioning the perfect engine and then commissioning the best people in the motoring industry to design and build it.

Californian classic Porsche recreator Singer Vehicle Design has responded to a request from a longtime customer and drafted Williams Advanced Engineering and legendary Porsche engineer Hans Mezger to do exactly that. And the result is just stupefyingly good.

A four-valve head appears, as do titanium conrods, aluminium throttle bodies and dual oil circuits, lifting power from an original 184kW to a massive 373kW, that figure ultimately pinioned by a stratospheric 9000rpm redline. That’s in addition to the new carbonfibre airbox and resonator, the ram-air system and a titanium exhaust system.

These mods bring a new aesthetic to the usual Singer treatment. The beautiful individual throttle trumpets we’ve become used to have been covered by the carbon intake system, while the twin centrally mounted exhaust outlets have been replaced by a pair of pipes set further outboard.

Rob Dickinson, the founder and CEO of Singer, masterminded this project at the behest of loyal client Scott Blattner. Developing a normally-aspirated air-cooled roadgoing unit with the power of a modern GT3’s engine hasn’t been easy but Singer’s customer base is attracted to this depth of detailed engineering.

The average bill for a Singer-restored 911 currently stands in the region of USD$600,000, so a car with this engine would likely top the USD $1m mark. What price perfection?

2