71 Dart Small Block Conversion

I have a 71 Dart Swinger that currently has a /6, 904, 8 1/4.
I am going to dump in a 360 this winter. I have a rebuilt 727 and an a body 8 3/4 rearend. I am looking for all kinds of advice on this build. The 360 is a 79 model, and I'm looking for some inexpensive ways to gain some hp before dropping it in. Anyone know any good inexpensive cam/head/carb installations? It has a edelbrock 650 4 barrel right now, thats as much as I know. Any recommendations on a good set of headers? I also found a set of 323 gears for the rearend, and was told that would be a good combination. Any info is greatly appreciated thanks.