If you don't know, then don't spread misinformation.
Saying there's nothing "highly distinctive" between the Coyote and Roadrunner is like saying the Lincoln Mark VIII motor is the same as the '03 Cobra.
actually, thats not misinformation. misinformation would be specs way off the grid or telling someone that they have a bad timing belts cause their car is surging. i'm not here to get in an internet debacle over some specs. however read here:
http://media.ford.com/images/10031/2013_MustangBoss_Specs.pdf
i will admit there are some knick-knack items deleted and given between the both. technically yes theres differences. yes i know you're saying i'm right. CNC ported heads, lighter valve train and Cams. yes agreed, there are changes. however, its still the same engine as the coyote. the biggest change was in the intake manifold to get it to huff and puff in the upper RPMs. It has a larger plenum and shorter runners. we know how intakes work. My first statement still stands. its all in the matter of how you view it. you can see this in a pompous kind of guy way or it could make sense. let it be known i'm not insulting you. that's not my objective.
no matter how we look at an 03/04 cobra engine. remove the supercharger and its still a 4.6. beefier yes but none the less the same shit. its all semantics.