I have 2001 bora(jetta) TDI 110 hp AHF engine. I want to make turbo upgrade. I search the forum and found some informations which are confused me. my engine has a turbo vnt15 single manifold. which turbo can I put on my car instead of vnt15 the orijinal one. actually is vnt17 suitable for my engine or which type of vnt17 is suitable(easily adapted to my engine)? I heard hybrid type of vnt15 which is vnt15/17 hybrid, what kind of things to be done for hybrid vnt15/17?