found mine on CL....98 w/87k for 6.5k

but it needed timming belt and tires...another 1.5k....

make sure all maintenance has been done and recorded....

 

You can also try autotrader.com, that's where I found mine.

 

go for a B5 S4 thats a sweet ride 2.7 Twin turbo Quattro with a six speed transmission
what a beautiful car

 

you can get an A4 to the same horsepower levels of an S4 (of similar year) for half the cost. its also twice as easy to do the work yourself on an A4. theres more room under the hood for stuff in the A4, parts are cheaper, junkyard car parts are much more readily available. not saying the S4 isnt a sweet car, but i definately dont have the money for one, if you have deep pockets then go for it, its a great ride.

get a 1.8t. stay away from the V6 2.8 if you want to mod. theres almost nothing available for those cars performance wise as i found out. my first audi was a 2.8.