360 Build for my wife Questions

actually the stock heads are going to be a bottle neck. you are opening up the exhaust, the carb, the intake, but your flow will remain just the same through the heads. you should see if you can find a decent price set of heads with 2.02 intake valves somewhere. new is pricey but maybe you can find a set if you post in the wanted section. you never know someone might have some sitting in their garage taking up space. also check with your local machine shop sometimes they have leftover/abandoned parts.