| Modifications | Stock | Street Touring | Street Touring X | Street Prepared | Street Modified |
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| Shocks/springs | Shocks only |
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| Coilovers |
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| Strut tower bars |
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| Sway bars | Front only |
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| Camber plate (front) |
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| Camber shim (rear) |
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| Camber bolts |
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| Upgraded bushings |
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Non-metal | Non-metal | Non-metal | Non-metal |
| Upgraded control arms |
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| Wheels/Tires: | |||||
| Wider wheels |
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< 7.5" | < 8.0" |
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| Wheel spacers |
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| Stickier tires | OEM or limited others | < 225 mm, > 140 wear | < 245 mm, > 140 wear | DOT |
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| Fender lip rolling |
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| Fender flaring |
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| Brakes: | |||||
| Upgraded discs |
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Same size |
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| Stainless steel lines |
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DOT | DOT |
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| Upgraded pads |
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| Upgraded fluid |
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| Brake ducts |
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| Upgraded calipers |
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| Proportioning valves |
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| Speed bleeders |
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| Drum -> Disc |
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| Engine: | |||||
| Plugs/wires |
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| Air filter |
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| Thermostat |
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| Oil cooler |
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| Motor mounts |
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No extra metal | No extra metal | No extra metal | No extra metal |
| Fuel module |
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| Exhaust (cat-back) |
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| Cat removal |
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High-flow |
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| Header |
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Emissions legal | Emissions legal |
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| Intake manifold/TB |
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| Port matching |
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Within 1" of ports | Within 1" of ports |
| Adjustable cam gear |
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? |
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| Camshafts |
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| ITBs |
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| Engine swap |
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Same line (Appendix A) | Same manuf. |
| Standalone EM |
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| Turbo/Supercharger |
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| Water injection |
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| Transmission: | |||||
| Clutch/Flywheel |
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| LSD |
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| Final drive |
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| Transmission swap |
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Same line (Appendix A) | Same manuf. |
| Interior: | |||||
| Seat replacement |
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> 15 lbs, head center | > 15 lbs, head center |
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| Rear seat removal |
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| Trim/plastic removal |
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| Side beam removal |
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| Exterior: | |||||
| Euro bumpers |
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? | ? | ? |
| Bumper removal |
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| Rub strip removal |
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| Body kit removal |
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| Carbon fiber hood |
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| Spare removal |
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| Other: | |||||
| AC removal |
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| Fan replacement |
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| Battery replacement |
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Same voltage | Same voltage | Same voltage | Same voltage |
| Battery relocation |
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Not in passenger area | Not in passenger area | Not in passenger area | Not in passenger area |
| Battery tray removal |
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Only if unboltable | Only if unboltable | Only if unboltable | Only if unboltable |
| Emissions removal |
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| Fuel cell |
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Stock location, +/- 20% | Stock location, +/- 20% |
| Minimum weight | None | None | None | None | < 3.0L + FWD = 1800 lbs |