Finally got the Infinity Kappa speakers installed and what a f-ing difference. First of all the installation took 1 1/2 hours with no problem on all four speakers (should have done it myself and save $100, ho well). The sound is 20 times better than stock speakers (the stock speakers are so shitty, the build quality is a joke shame on ford shame on you) the highs are much clearer and now I have real mid. The bass is very good for 6x9 or 8x7 or 5x7 what ever they wanna call it. My only concern is the tweeters level is to high buy you can lower it down whit the 0/-3dbs button on the tweeters, for example in the back if you point the tweeters at the left and right passenger it sound good. But if only one passenger sat in middle they will get way to much high, almost to an annoying tone, so if you do get these speakers be aware of this. Just pint then downward or press the button.
This to me was a no brainer $140 for all for speakers and $100 installation(do it your self is my advice)
Music tip: if you up grade your speakers you should upgrade you music quality, use 320kbps or lossless you start hearing thing in songs you never heard before make the whole music experience 10x better.
Thank for reading