A good set of springs and struts, tokico, and eibach are what I am going for, but listen to others, cuz thats who told me what to get.

LSD is a must with a turbo.

If you build your own kit you will be geting the most out of what you have. As far as price goes, you can spend more or less buying the kit, but I say if you want the most HP for your $$ and relyability, piece together your kit, that way you know what you get, and you can pick and choose what you want.

It all depends on the aplication. GOOD LUCK!