Singer continues their streak of being the ultimate purveyor of resto-mod vintage Porsche 911s. Their latest collaboration sees the California outfit teaming up with legendary F1 racing group Williams Advanced Engineering to modify an air-cooled flat-six Porsche engine. that
The specs: it displaces 4.0 liters, makes over 500 horsepower and will rev up to 9000 rpm. The level of design and craftsmanship that have gone into this engine set the bar far above what any other restoration has even thought to attempt.