The success of the Motorsport derived versions of each generation of the venerable 3-series mean that it’s both easy and a natural choice to concentrate on them in the used market. But BMW has also offered some pretty special non-M models in the 3-series lineup, and the 2003-2006 330i. Much like the M3, the 330i was available in 2-door coupe and convertible no surprise there – but the 330i was also quite popular as a sedan and the E46 M3 never came in that configuration. If you ticked the ZHP Performance Package box, you paid an additional $3,900 on top of the premium for your top-of-the-line 330i. While that was no small amount of change, what that amount resulted in was actually quite a bargain. Developed by BMW Individual, you got a plethora of performance details throughout the package. Outside, M-Tech body pieces adorned the car front, sides and rear and blacked out trim replaced the chrome. So too were M-branded special Style 135 18″ wheels, with tires to match the width of bigger brother M3. Lower and stiffer suspension was met with more negative camber, special reinforcement and control arms. The engine was upgraded too, with unique cams and a revised engine map resulting in 10 more horsepower, but the ZHP was more than 10 hp quicker off the line thanks to a shorter final drive and a 6-speed manual borrowed from M. Performance wise, the ZHP split the difference between the 330i and M3 in acceleration and cornering, so it really was a performance package to live up to its name. Inside, too, many special details adorned the ZHP – from small items like lightly revised gauges with special needles to unique shifter, steering wheel, seat fabric and eggcrate dash trim. Just like the S-Line Titanium Package Audis, these more potent 330is have a cultish following who proudly claim they’re not only special, but one of the most special BMWs made: