Peter, the car was built specifically as a test prototype and was never intended for sale or evaluation outside the factory, so as a result no spec sheet was ever produced. We ran it on a dyno many years ago at 6200 feet altitude and got an uncorrected 360bhp; we also know that the altitude is worth a 17% power loss on non-turbo applications. I can tell you with some certainty that the compression is around 12:1 and that the ECU is a totally different map as compared to the S4 and even the CS or SE cars. We have never had the engine apart and are pleased about not having to do so. We also know that the engine was a Speziale assembly and that it was stuffed with all the goodies they and Kremer had developed up to that time; the purpose of having that much horsepower was to further test the higher top speed aerodynamics of the different bodywork with a view to production - but this never happened. Right now it still only has about 52k (kilometers) or 30k miles on the clock from new. I will add a bit to that next week as I will be in SA for a couple months.

The suspension and braking systems are exactly the same as the Club Sport cars.

When we first heard the car at the factory, we knew it was a whole different ballgame. Hence our insistence on acquiring that specific car, even though as VIP customers they offered to build us "one like it" at the time.

The car has seen the other side of an indicated 300kph quite a few times, most recently with a passenger and the aircon inadvertantly still turned on. I have run up against manual GTSes a few times and they are absolutely no threat whatsoever, even in the low and midrange.

I notice that we also have a Wikicars page nowadays, which might be of interest. It is listed at the bottom of the Porsche main page under the subtitle of concept cars.