S4 - big body, I5 turbo S6 - big body, I5 turbo S4 - small body, V6 twin turbo? This must be why Audi didn't want Volvo to use the S4 name. They wanted to be able to confuse the public all by themselves. Can't they call it an A4S or something? Carl Stern Boulder, CO '91 SHO - kinda sorta thinking about getting an Audi next, maybe