I saw this car in the flesh at Stanford Hall. It's built by the guy's at Rally Legend Replica's and it is indeed a superb example. It was literally just MOt'ed ahead of the show and now just needs the suspension setting.
The front and rear 'cages' are a thing to behold, exact in every detail apparently and the Lancia Volumex engine is the same as mine, though they haven't tuned it as I have. The gearbox is Audi would you believe! The exhaust is custom. They think it weighs in at around 850 - 900 kilo's and they hope for 160bhp plus or minus a bit. They could easily have got more from the engine, but I think the build costs were getting a bit stupid, but with some head work and cam tuning the engine could give close on 200bhp with fabulous torque from the supercharger. The only thing they haven't done that I would have is install a pre-oiler and effective oil cooling, but I think they wanted to keep it period.