2jz-gte is a 24 valve, so 4 valves per cylinder... so two intake and two exhaust. Which means poor milage, but lots of power.
silvia won't be a 1/4 the car that a supra is, i do recomened a supra.
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You'll have chicks stuck to you, (chick magnet :P)
I think nissian is a toyota downgrade.