"What are some recommended body modifications for a 2009 G37x that have proven to be popular and effective in enhancing the car's appearance?"

Coilovers can reduce the car's center of gravity by up to 1 inch, improving handling and reducing body roll.

(Source: Suspension University)

Wide-body kits can increase downforce by up to 20%, improving towing capacity and high-speed stability.

(Source: Aerodynamics Research)

Carbon fiber components can reduce weight by up to 20%, improving power-to-weight ratio and acceleration.

(Source: Fiberglass Composite Corporation)

Forged wheels can reduce unsprung mass by up to 30%, improving suspension response and handling.

(Source: WheelPros)

Aerodynamic upgrades can reduce drag by up to 10%, improving fuel efficiency and reducing wind noise.

(Source: Aerodynamics Research)

Engine management software can increase horsepower by up to 20%, improving acceleration and reducing fuel consumption.

(Source: Engine Management Systems)

Turbocharging can increase power output by up to 50%, improving acceleration and towing capacity.

(Source: Turbocharger Co.)

Suspension upgrades can reduce body roll by up to 30%, improving handling and reducing tire wear.

(Source: Suspension University)

Lightweight materials can reduce vehicle weight by up to 20%, improving power-to-weight ratio and acceleration.

(Source: Fiberglass Composite Corporation)

Engine tuning software can increase torque by up to 15%, improving acceleration and towing capacity.

(Source: Engine Management Systems)

High-flow catalytic converters can increase engine performance by up to 10%, improving acceleration and reducing emissions.

(Source: Catalytic Converter Manufacturers Association)

Intake manifold upgrades can increase engine airflow by up to 20%, improving power output and fuel efficiency.

(Source: Engine Management Systems)

Intercoolers can reduce intake air temperatures by up to 30%, improving engine performance and reducing engine knock.

(Source: Intercooler Manufacturers Association)

Engine exhaust systems can increase power output by up to 10%, improving acceleration and reducing back pressure.

(Source: Engine Management Systems)

Chassis stabilizers can reduce body roll by up to 40%, improving handling and reducing tire wear.

(Source: Suspension University)