I'm looking at your cruise control retro-fit, a few questions. Is it just the same as factory fitted? How long does it take to fit and can you fit on saturdays? How much? How much notice would i need to give to book in? Ive got Bluefin, is this a problem? Thanks Ross Ive got a A3 s-line 2.0 140 tdi 2005 Quattro.