Build me a Small block

Ok guys/gals I'm going to be building a small block for the 65 dart street/strip pumpgas car. I want this to be a budget build but also make around 500 horse. I will be getting a set of Edelbrock heads this I know. My question is what other parts and pieces would you guys recomend as far as pistons/rods/intake/cam etc. to reach my goal. Also would it just be cheaper in the long run to buy a stroker kit from speedomotive? tips/thoughts/ideas?