heads and intake manifold set up for 318. j heads available.

Since you're on a serious budget, I think you should pass on the 360 heads. Even if you put a cam in your engine, it would probably run better on the street with the 318 heads. You need to sit down and realistically think about how you'll be using your car and what you can afford. You shouldn't worry about heads until you have a bottom end that can make use of it. Look for an old Edelbrock LD4B manifold. Its basically a LD340 with 318 size ports. Use a 500 cfm Edelbrock carb or a Holley 600 Vacuum secondary and it should wake your engine up a little.