I found a couple of links detailing the design and development of the Coyote and Boss 302 engines. I just wanted to share the links for anyone interested. I appologize if this is a repost for this forum, but I found it very interesting. http://www.mustang50magazine.com/te...ford_mustang_gt_50_coyote_engine/viewall.html http://www.mustang50magazine.com/techarticles/m5lp_1108_2011_ford_mustang_302/viewall.html I am a complete IC engine nerd, so seeing the design decision from many of the engineers that worked on the project is fascinating. Amoung the interesting points, I understand better now why OEMs like plastic intake manifolds. Beyond the obvious low cost and heat transfer benefits, they are molded perfectly smooth inside, as compared to cast aluminum which is going to have a rough surface finish to start with. It is also great to see the similarities and differences between the 4.6/5.4 based modulars and the coyote. The article on the boss engine makes me want to pony up the difference for the roadster build though!