Just a question..how much are spending on this stuff? Why wouldn't you want something better? Not to say the SVT's are bad but there's much better out there, unless you're saving a bundle till you can put the good stuff on.
But to answer -yah you'll notice
depends on what you are comparing it too, but you can save a good bit of money going the svt route, especially if you get some of it used. plus, it is a good setup. not the best, but way better than the stock zx3.