4 would be swizneet, but think about the weight issues it would have. Sure the car may run faster, but with 4 on there it may only run like a 2.6 since these little fellas don't have a whole lot of torgue.... now if you could figure out a way to give your car more torque, then you will recieve a mouth wide open and a golf clap.
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Custom:
Toyota Trueno
tires: soft
gear: light blue
shocks: mediums
motor: 2.2