In my opinion, you're better off building your own kit if you want one. The kits you're looking at, I mean $600? How well can it really be seeing as how most decent basic turbo kits run for around $2500+. Do yourself a favor and stay away from those cheap e-bay kits. It's not worth the hassle, chances are, it won't fit correctly, the moment you turn the boost up you might blow the manifold or turbo itself, etc. This is all just my opinion though.
To put it in a better sense, you get what you pay for, just remember that
To put it in a better sense, you get what you pay for, just remember that