Greetings everyone: From the time I was a kid building this model, starting when the kit was released in 1964, I kind of "knew" there was a problem with the basic measurements and proportions. When, in the Sixties, I compared the radius of the rear wheel arch to the incut underneath the fin, it was clear to that 13-year old kit that something was wrong: The arch should have "invaded" the incut under the fin. As my work on the Predicta Project progressed, I asked my close friend Darryl Starbird to take some basic measurements for me that revealed very significant inaccuracies in the kit body as detailed in this page of my site: http://thepredictaproject.org/?page_id=419 Please read the entire page to see just how "off" the body is. Thanks to Steve Roullier for converting Starbird's measurements into the more professional presentation. The kit body is "off" in other ways, too: the trunk on the rear car isn't flat, the bubble is the wrong shape and too tall, and other details that can be seen on that page. About the other comments in this thread: Of interest here is that Monogram employees took a lot of measurements but they were of the car BEFORE Starbird restyled it. Go here to see some of those pictures (scroll down): http://thepredictaproject.org/?page_id=534 Much of the basic problems with the kit arose at the time that the initial measurements were taken (remember, those were the days before digital 3-D scanning and the like), AND because no one from Monogram went to Starbird's shop when he was restyling/redoing the car. For that reason, there was not final-configuration measurement of the restyled body before the kit was released. I have the privilege of owning the dozens of original vellum drawings made at Monogram after the car was measured in the Monogram back lot. Those drawings were given to me by Roger Harney 25 years ago at the time that he sent me the myriad photos they took of the car -- all of that material was about to be thrown away. Those drawings not only displayed the very basic details of this kit (this was not at the level of Johan's Turbine Car!), but those drawings, when scaled up (using the wheelbase as the baseline) show that the basic dimensional errors occurred at that time in late 1963. So, it appears that the tool makers did their job in accord with the drawings -- it was the drawings that were off. The Predicta has been an obsession of mine for nearly 35 years and I finally have the time and money to pursue the intense goals of this project. My book (10 years in the making!) should be out next April, and then other modeling aspects of this kit should commence about then including the construction of a 1/8 scale "Big Predicta" that will be a fully detailed and accurate scale model of the car. Please go here to read more about the "phantom kits" we'll be creating: http://thepredictaproject.org/?page_id=403 You may want to check out the "News" page for further details on the history of the project: http://thepredictaproject.org/?page_id=8 Finally, check out these built up models, including the incredible work of Bob Peeples 53 years ago before the kit was issued (his model is of the original version of the car). Mike Kukaba is probably too modest to tell you guys about it, but he' started his own models of the Predicta and there's a link to his work at the bottom of this page: http://thepredictaproject.org/?page_id=458 I'll keep checking back on this thread to see if I can respond to any further questions. My best wishes to all! Mark S. Gustavson