Hi all. I'm a lifelong car nut in my late 50's who's owned nearly 300 (mostly) interesting cars, but this is my first Beemer. I always admired the 3.0 CS and subsequent 6 Series and just purchased an 81 Euro 635 CSi. It was grey market imported by Dietel Enterprises of Laguna Hills CA and received a 745i turbo engine swap and suspension mods at the same time. It is in remarkable condition though in need of a few restoration tweaks that I'm beginning to pursue. I'd very much like to hear from anyone with a Dietel car, experience or knowledge to add some historical context. For example, I was told by the seller that three 635 CSi's were put together by Dietel with 745i engine swaps, any confirmation?