Which one would be the best choice for a Fabia vrs ? 

Well all I can comment on is that I saw the 158bhp Leon Cupra diesel at AmD in Essex last October when I was there (2005 car) and the owner had it in for a remap. We were chatting about what it would make on the rollers and he was hoping for 215-220bhp but I said it probably make 205-210bhp because of it's age. It made 209bhp which is a nice improvement over standard. Obviously it produced quite a lot of torque but can't remember the figure.