I put a E30 6 cylinder rear end in my car and i can go 60 in first gear... not that i ever do. The difference between 318i and 318is.. at least in e30 is 4 door vs 2 door and also "better" suspension, sport seats and shadowline (for the IS) Probably a few things i missed but you get the basic idea.
I still can't get over the fact you are a Chevy guy in Germany.. you must get as much shit as us BMW guys in the states get.