What are the items and regulations for car modification?

Power (spark plug, cylinder pipeline, turbine, intercooler, tail gear in speed change stage, clutch, flywheel, light pulley, NAOS, oil respirator, throttle, fuel regulator, secondary air intake, electronic ballast, grounding wire, etc.). ).

Brakes, (four-piston, six-piston brake calipers, brake pads, increased ventilation brake stacks, increased brake booster bags, flat tires, wheels, modified oil pipes, etc. )

Suspension (shock absorber, with adjustable anti-roll bar, underframe, trapezoidal frame, tic-tac-toe frame, swing arm, pull rod, underframe, engine guard plate, etc.). )

Appearance (big circumference, small circumference, tail,

Interior decoration (various Japanese instruments with lights, racing steering wheel, racing chair, ignition switch, anti-roll bar installation, instrument table modification, urban transformation, handle block, hand killing, pedals, five-point seat belts, curtain scissors doors, etc. )

Audio (speaker, 4-5-6 inch, 6X9 speaker, subwoofer 6-8-10-12-15-24 inch, active without power amplifier, passive with power amplifier, vehicle-mounted power amplifier, etc.). 、CD、VCD。

That's about it! See if it's enough!