I have a 2001 IS its all stock except for n intake. I am the price away of puttin a turbo into this but have some debate and am kinda skeptical about whether or not to purchase this "kit" from a buddy. Its a IHI RHB5 turbo i dont kno much about turbos and was informed that this turbo would not fit nor be effective in my lexus. I need advice and input as to whether this would be a project i should do. Will this turbo work for my IS, how affective will it be, will it give me the boost i want, what all would i need to replace and upgrade to install this if it will work? Please any help and advice or experiences would be wonderful. PM me or post back ne thing thanks.