If the engine is stock, a 500 to 600 cfm carb will be plenty. As far as the intake manifold is concerned, an aftermarket intake will give you a little more power and perhaps slightly better fuel mileage, but it is not necessary that you change the manifold. You will not have to change the distributor or computer controls. Edelbrock makes carbs and intakes that are compatable with computer controlled vehicles (i think).
Phil
