for a mild street combo, would it be worth stepping up and getting into aluminum heads? I planned to use gt40ps, Im looking for torquey, reliable power and good street manners/ decent mpg for a semi daily driver. I was thinking gt40ps, explorer intakes, stock HO cam with 1.7s. People have told me with the work the irons might need, i might as well go for aluminums. What are the least expensive aluminums out there? Also, do aluminum heads make bad semi daily drivers? For the extra money, are they really that much better than the gt40ps?

