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What are some potential modifications I should consider making to my 2003 Toyota Corolla ZRS to improve its performance and safety, and are there any common issues I should be aware of as a new owner?

The 2003 Nissan 350Z Track model comes with a viscous limited-slip differential (LSD) that can improve traction and handling during aggressive driving or track days.

The 350Z's engine, a VQ35DE, has a redline of 6600 RPM, but its powerband is most responsive between 4000-6000 RPM, making it crucial to rev the engine for optimal performance.

The Track model comes with stiffer suspension compared to other trims, offering better handling at the cost of a harsher ride.

This can be softened with aftermarket shocks or springs.

Aftermarket wheels can help reduce unsprung weight, which positively impacts handling and acceleration.

However, ensure they fit within the stock fender wells and matching the bolt pattern.

The 2003-2004 350Z has an easily fatigued rear lower control arm, which can be addressed by upgrading to aftermarket pieces or factory Nissan reinforcements.

A high-flow air filter can be installed to improve induction and increase performance by allowing more airflow to the engine.

A performance tune can optimize fuel and ignition maps, enhancing drivability, and allowing the engine to perform better under different driving conditions.

A performance clutch upgrade can help handle increased horsepower and torque, which may extend the lifespan of the transmission and prevent slippage.

Brake upgrades, such as higher-quality pads and slotted rotors, can improve braking performance, fade resistance, and pedal feel.

Aftermarket sway bars and bushings can further improve handling and reduce body roll, providing greater stability during cornering.

Adding a transmission cooler can help prevent premature wear and damage due to excessive heat during aggressive or track driving.

Regularly changing the transmission fluid can help reduce wear and maintain smooth shifting, regardless of the quality of the original fluid.

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