Basic 318 Mods

Dan the man said

Wish me luck as I'm going to be checking out a couple of duster's next week. I'm only asking these questions as a quide, both are 318 cars but one is a 2 barrel. Once the car is home I'm going to check it out completely and if everything checks out okay I'd like to do a 4 barrel swap and was wondering what size carb and intake manifold to use. I thought about a better coil and module. A curve kit and a good dual exhaust system. The car will be a cruiser only and probably the engine will never see more than 4500 rpm's. I'm open to a stall converter and a different gear ratio. Maybe even a mild cam.

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Considering you state cruiser and 4500RPM, I like the Edelbrock RPM Airgap manifold. One area to pay attention to before purchasing an Airgap, is hood clearance. The Airgap is a bit taller and could cause interference problems. A performer RPM should clear in that case. Bite the bullet and purchase the real McCoy Edelbrock insread of the cheap knockoffs. With that the 500CFM AVS2 carb that comes with annular primary boosters would be a good choice. The 650 AVS2 would also work well.
These days with fuel costs likely only to increase, I would determine what gears are installed now. 3.23 or 3.55 work well with an OD transmission.