Although it may not be an ideal platform for a racing engine, or a real high performance engine, I must take exception that the Ford 6.8L V10 is a "poor design". My 99 F350 Dually has a bone stock 2 valve V10, with a 5 speed manual transmission, and I have nothing bad to say about the V10. It has been used almost exclusively , since new, for towing an enclosed race car trailer, which it does very well. In it`s 25 years of service, it has never had a valve cover off, doesn`t leak a drop of oil, or burn any oil between oil changes. And it is an incredibly smooth engine. It is no fuel economy champion, but I really doubt anybody would think that a 7000 pound truck, towing a 10,000 big box of a trailer, with a 10 cylinder engine, would be a gas mizer.