Good call. That was pretty much the only time S and M were "put together". It was a weird move from Audi to put that big V8 in a S version. It made a whole lot of horsepower and was suddently up there with the M3 output. But it was no where near the M3 performance. Just to 100km/h it was 0.5 secs behind, and heavy as hell in front. So that was a car in nomansland for Audi. It was supposed to be under the RS4, but since the RS4 B6 never came, insteas we had to wait for the B7, the S4 V8 remained a A4 with a big engine.