As far as the car goes,it is going to be a GS-R.I have been reading about turbos alot lately and have been thinking, my goals are to maybe hit the 12s in the 1/4 (trying to get around 300hp maybe)with a combination of AutoXing on occasions,this is for daily driving if you haven't guessed yet. I've been lookin at the Greddy, Revhard,Turbonetics Kits. And when looking at the turbonetics kits i see some kits have 3" downpipes( are bigger downpipes better?) and that they have ball bearings in their turbos which make it easier on the engine since it can spool up quicker and more efficiently without as much effort, as in increasin psi for example, the thing i don't kno about the ball bearings is i don't kno if they require oil, i've heard they do and that they dont but i have no clue.and if that is so does it mean i dont need any oil lines? As for the Greddy and Revhard Turbos I've heard that they're excellent but i dont which turbo would i wanna lean towards most, because if I wanted to set the psi to bigger numbers i wouldnt want too much stress on my engine, that's why i'm considering Turbonetics. Feel free to give me any opinions on anything. Thanks

-Jon