90dpscoupe has some good suggestions. Alot also depends on if you want the car to be streetable (ie. good gas mileage, throttle response, good road manors). As far as aluminum heads go, no they will not make more power over a set of iron heads, but they will save weight, hence allowing your car to accelerate faster. Give us some more info as what you want out of the car besides 11 second ET's.
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