The 924 is actually an interesting story especially some of the details which can be inaccurate in the 924 books out there. Not many people realise that the engine was designed by Porsche engineers, that the 924 and the what people expect to have been the VW version also in development were very different cars with even a completely different wheel base and shape, unlike the 914, that the head which found its way onto the 924 non turbo was the head intended for the VW version (The herron head), which also had detuned (intentional bad designed) intake ports, and the head that found its way onto the 924 turbo was intended on being the 924 non turbo head, as used in some later motorsport versions of non turbo engine. I am not 100% sure, but I remember when I was looking into all this in the 80's, which included talking to the designer who worked on some parts of the 924, and always lead design on the 928 (A scottish chap who now designs road sweepers and ice polishers! lol) the 924 engine type was not used in a VW or Audi until after the 924 had been released.. So, even though the 924 engine was made in a VW plant, much like the car.. And 944's! it is better to say the 924 engine was also used in VW's and AMC cars, rather than saying the 924 had a VW/Audi engine... Which I think is something which not only defamed the 924 back then and now, but also has a legacy which has often impacted the 944 and its value within the Porsche family. What bugs me is when air cooled 911 owners turn their nose up at the 924 by saying "Oh thats one of those audi parts bin cars", when they have just stepped out of something which has its design and bloodline with more in common than VW/Audi group than it does to a new concept like the 924... Or maybe I just have a soft spot for the underdog. Then again... I love all the Porsche models... I also love the idea of a LS1 in a 944.. But at the same time could not bring myself to do it myself, even though a 944 would sound awesome with a muscle car engine.