If you don't like how the new
If you don't like how the new ones look and you have plan for a 2014, more power to you! It will certainly get you a faster 0-60 for the money, which is pretty much the point of a Mustang. And I would suggest looking into a supercharger kit for it before spending money on all those other mods. I think you'd probably get more bang for your buck that way. You could make it one wicked machine!
But don't let the article fool you.
The 2015's aren't slower than the 2014's. On the very first day of testing, the 2015's matched the 2014's 0-60 at 4.4 seconds, and by most sources that's actually beating the 2014. Most put the 2014 at 4.5 seconds. So when, after only one day of testing, the 2015 got 4.4, I was impressed. But then of course torque news takes that writes an article claiming "oh no! It's slower!" based on a 0-60 of 4.3 for the 2014, which I had never seen before. Every reliable auto news source had put the 2014 at 4.4 or 4.5 seconds. At some point, in the perfect conditions, with a fantastic driver, and maybe even a little tailwind, I'm sure it could have done that 4.3 seconds. But then, the 2015 could do the same thing in the right conditions. Just the fact that the 2015 did 4.4 on the very first day of testing no problem, says a lot. So in reality, the 2015 is just as quick if not quicker than the 2014. That's just stock though of course. The fact that the 2014 is lighter and has the live rear axle gives it more potential for sure. And because it's cheaper to get one now, you'll have more money for mods! And that's what the Mustang is all about.