The B5 S4 was only imported for the 00-02 years,all are 6 speeds or.. bleh, Tiptronics I had a 2000 6 speed for a few years.
It was chipped, some mods and fast as hell!
Great cars, I love Audi's but I had a decent amount of issues and the dealers service was horrible! (It was a CPO)
Horsepower is 250, just a stage one chip will get you 320+
Turbo replacments are issues with these cars and they are expensive to maintain.
Timing belts are key! make sure any car you look at has had it done by 60K miles.
Freind of mine just picked up a really nice 01 for $14.5, they are allot of car for the money.
Check out:
Audiworld S4 Forum