What kind of modification does the door modification belong to?

Power (spark plug, cylinder pipeline, turbocharger, intercooler, phase shift at tail gear, clutch, flywheel, light pulley, NAOS, oil respirator, throttle, fuel regulator, secondary air intake, electronic ballast, grounding, etc.). )

& gt Brake (four-piston and six-piston brake calipers, brake pads, brake stack ventilation, adding brake booster bag, flat tire, refitting wheel hub, refitting pipes, etc.). )

Suspension (shock absorber, adjustable, small anti-roll bar, chassis, trapezoidal frame, 1 kg frame, swing arm, tie rod, bottom rail, engine guard plate, etc.). ),

Appearance (size surrounds the tail,

Interior (Japanese lights, various instruments, racing steering wheel, racing seat, ignition switch, anti-roll bar installation, instrument panel modification, renovation of the city, gear, hand-killing, feet, five-point seat belts, curtain scissors doors, etc. )

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

Maybe pull these! Enough watching!