Buy it, and that's £7k and a shiney blue V6 that you'll never see again.
Anyone who knows anything about Renault Sport cars wouldn't buy one without having a bloomin' good check over it, and as a seller, you'd most certainly offer the chance! You have to assume anyone who has one of these is an enthusiast, and would probably mention the fact that it's a phase 2 car, and the power output, and wether it was garaged overnight... I could go on...
SCAM.