I'd like to ask how difficult and how expensive would it be to change gearbox from tiptronic to a manual on (2000 W) A4 2.8 quattro????? perhaps someone has done or tried to do it or has technical knowlegde on what else would need to be changed. In manual the car is nearly 2 seconds faster from 0 to 60mph and i'd like something faster but can't afford S4, please dont tell me to sell this car and buy a manual cos its not an option. thanks for any info.