Instead of a 4 door M3 they made the 330i sport package. They frshened up the motor with a new cam, and the suspension is beefed up for spirited driving. Last year one of the guys I autoX with bought one and was running right with the e36 M3. The 330 sport is a good looking family hauling machine. As far as an e46 M3 4- door, not in the prodction plans that I know of. Hense a more powerful and better handaling "super 330i".