Hey all. Just recently I've decided to possibly go with some Ford Racing shorty headers. Now, I know they are a pain in the ass to install, as I've helped my friend with his car many times, so my question is, does anyone on here have any dyno numbers of before and after the install of shorties and am I even going to feel a difference. I guess if it's not really going to give me any good numbers, I'm not going to do it. Currently I have a K&N, minus air silencer, pypes off road X-pipe, borla muffs welded, and a proffesional prod. intake elbow. Any insight would be much appreciated. Thanks