Seems like a lot of trouble,with the special intake,custom headers,etc when you could use a regular intake & headers with some W style aftermarkets like AFR or TFS and probably still be money ahead.Just MO.
If I'm not mistaken That was Coates (I think Car Craft did an article) I inquired but was told that they were not available to the general public... They did alot of testing & mule work on....dumpty-dummmm.... FORD 5.0 heres the web site... Iwrote them approx a year ago things could have changed who knows http://www.coatesengine.com/index.html and some pics