Hi I am going to buy a ko4 doesn't matter weather it's used or new as I will refurb it if it needs it! I am just wondering what turbo I should get as there is a lot of different part numbers! I want one that will not have to be modded and will fit bex engine manifold and decat! By the way my car is a 2004 1.8t sline 190 bex engine code! Need advice as want to get one as soon as!