Hi. Maybe someone can tell me where can I find an upgrade for S4 containing K04 turbos and necessary additional hardware ? I've seen kits for around 7.000$, is that a normal price or maybe someone has encountered a better price ? I've got a friend here who just thinks his already-modded 315hp S4 is not enough. If someone can help me out would be nice.

PS. I'm talking about the US.:s4addict: