[Paul Huryk]

I almost bought one in 2001, instead bought an Acura TL Type S - more practical at the time...

You can think of the S4 as the German GN - can be made super fast with the right parts, but will eat you out of house & home in terms of maintenance and aftermarket prices. I would put the motor right up there with the 3L turbo Supra motor in terms of able to be extremely fast with a smaller size 6 and a turbo.