Here:
http://www.autopuzzles.com/forum/index.php?topic=27332.msg316108#msg316108is
"Gibbon's original special was based on a Rover 10 chassis, with a stark body for trials and a more civilised one for speed events. This multi-purpose machine was christened the Girastro. Gibbon himself, Jimmy Ramsay and Kenny Starling from his Rover agency's service department, each contributed the first two letters of his surname, while Rover provided the final syllable."
this one should be
"Their later Rover Special was built up from a P3 chassis, given striking aerodynamic bodywork and a 2.6-litre engine eventually enlarged to a full three litres, years before the Rover factory followed suit. This was one of the first privately-built competition cars equipped with disc brakes. "