I'm looking into different heads but I don't know which to go with. Whatever I go with I'm planning to have ported polished and shaved. What would be the best heads with work done to them. Factory e7 heads, 351w heads, or a set or gt40p heads.
If you are going to go through the trouble of porting get some good aluminum heads. Plus, they will perform better than the heads you listed right out of the box. If you look around a set of twisted wedge, edlebrock or Holley heads can be found for cheap. I bought a set of twisted wedge heads a few years ago complete for $600.