hi guys, i have a problem! im new to the audi modifications so i need some serious help lol, i brought an audi a6 1.8t with a blown turbo. after buying 3 turbos and i was told they would all fit but they didnt!!! what k04 would fit my aeb engine???? k04-015??? k04-023??? really need your help guys as ive been without a car for 3 months now