My Cousin had 2002 S4 Twin Turbo with so many upgrades I lost count. I couldn't afford the German Performance early on so I opted for a Pontiac. After four years and many dollars my 2001 GTP runs high 12's in the 1/4 mile and is crazy fun, but I want a German AWD. I have been looking at many 2006-2007 S4's. I have to have a manual tranny. Were there many differences between 06-07? Hard top vs Covertible? I may need an S5.