330i ZHP Performance Package

Basically a 330 optioned with M-tech II and alcantara interior pack, and a bunch of engine and suspension upgrades. The MSRP for the package was $3900. Many US magazines consider the 330i ZHP to be one of the best handling/balanced BMWs to date. Below is a list that was on bmwusa.com. Only thing I can add to it is Imola Red paint, which is usually reserved for M cars.

Engine mods (new camshafts, electronics, & lighter flywheel) for 10HP & 8 ft/lb of torque increase & 6800 max RPM (from 6500).
6 speed short throw shifter
3.07:1 Final drive ratio (instead of 2.91:1)
Max Speed Limiter set to 155 mph (instead of 128)
New M suspension, more "sporty" than standard sport package:
Firmer springs (front +6%, rear +8%)
Firmer shocks (Jounce: front +50%, rear +20%), (Rebound: front +35%, rear -8%)
Larger diameter anti-roll bars: 23.5 mm front (v. 23.0), 18.5 mm rear (v. 18.0)
More rigid forward bushings
Lower ride height by 15 mm (.6 inches) utilizing shorter auxiliary springs
-.5 degrees of camber
BMW M exterior trim elements (front & rear fascia, side sills, & trunk lid spoiler)
Special exterior trim: Anthracite (charcoal) headlight & foglight surrounds, High-Gloss
Shadowline (black gloss) trim
Large diameter stainless steel dual exhaust outlets
Extra thick Alcantra steering wheel
Sport Seats
Alcantra & Cloth upholstry to replace leatherette and standard trim (leather still an option)
Choice of "Black Cube" or "Silver Cube" trim
Anthracite headliner
Red needles on the instrument cluster
Unique 18" Wheels (style 135M), 18x8.0" front, 18x8.5" rear
Wider Tires: 225/40ZR-18 in front and 255/35ZR-18 in the rear.
Steering ratio: ZHP has the steering ratio of 13.7:1. Non-ZHP cars as well as the E46 M3 is 15.4:1, and the E46 M3 Competition has ratio of 14.5:1.